Diving in Warm Temperate Northwest Pacific
Quick Facts
- • Entry types: Mostly shore entries
- • Expect: Varies by conditions visibility
- • Highlights: Discover Warm Temperate Northwest Pacific's dive spots
Explore the underwater wonders of Warm Temperate Northwest Pacific, province. This region features 125 documented dive spots, each offering unique underwater experiences. Whether you're seeking calm snorkeling bays, challenging freediving depths, or exciting scuba adventures, Warm Temperate Northwest Pacific has something for every underwater explorer. Browse detailed spot information, check current conditions from recent dive logs, and connect with the local diving community to make the most of your visit.
Regional Context
🏛️ Marine Hierarchy
🌍 Associated Countries
Countries in Warm Temperate Northwest Pacific (3)
Popular Spots in Warm Temperate Northwest Pacific (125)
1 Gochi Ohanabatake
1 Gochi Ohanabatake is located within the National Park Marine Protected Area, specifically known as the 'Flower Garden site #1'. This dive site is primarily accessed from the shore and features depths ranging from 5 meters to 12 meters. While it is generally safe to dive in this shallow range, divers should be cautious of the often strong currents, which can make conditions challenging. The site is suitable for drift diving, but it is advisable to choose times when the sea conditions are favorable. Marine life commonly observed here includes snappers, groupers, scorpionfish, and schools of yellowtail snapper. Additionally, divers may encounter scampi, yellowtail, turtles, and occasionally sharks and rays. Unique species such as longnose hawkfish and frogfish can also be spotted among the diverse marine ecosystem.
A Point
A Point is known for its seasonal congregation of hammerhead sharks, particularly from summer to fall. Divers can observe these sharks as they swim in schools, often circling around submerged roots or resting on rocky surfaces. This site is recognized as a significant habitat for various shark species, making it an important location for marine biodiversity. The entry to the dive site is from the shore, providing easy access for divers.
Akahae
Akahae is a dive site featuring clusters of soft and hard corals at a depth of around 20 meters. Divers may observe frogfish hiding in crevices, alongside schools of migratory fish. The site is home to a variety of marine species, including snappers, groupers, scorpionfish, yellowtail, turtles, and occasional sightings of sharks, rays, and flatfish. The presence of strong currents necessitates careful assessment of diving conditions. Although previous typhoons have impacted the hard corals, signs of recovery have been noted as of 2023, enhancing the site's appeal for divers.
Akehama
Akehama is situated in the western region of Ehime Prefecture, characterized by a rias-style coastline and a sandy beach approximately 300 meters long. The site offers a diverse range of marine life, including macro species and larger migratory fish. Notable residents include dwarf damselfish, various nudibranchs such as blue, yellow, hero, and Fujii nudibranchs, along with tropical species like chubby damselfish, anchovy damselfish, pepperhead damselfish, minnow scorpionfish, and grouper YG. During the summer months, divers may also witness the spawning behavior of green squid.
Aki no Hama
Aki no Hama is located on the largest of the Izu Islands, which is closest to the mainland. The island features Mihara, an active volcano at its center. While boat diving is an option, the site is primarily accessed via shore entry, with Autumn Beach being the most frequented access point. The underwater environment is rich in biodiversity, showcasing a variety of macro life including symbiotic gobies in sandy regions and nudibranchs among the rocky areas. During the summer months, divers may encounter white tip sharks, adding to the site's appeal for marine life observation.
Ando no Hana
Ando no Hana features two buoys, one located in shallow waters and the other in deeper areas. The deep buoy is anchored in a sandy and muddy substrate, with depths exceeding 20 meters and a maximum depth of approximately 27 meters. Divers should maintain neutral buoyancy to avoid disturbing the sand. The site is accessible for diving from October onwards. Marine life includes various goby species, such as the threadfin goby and the threadfin lily goby, as well as frogfish that can be seen moving along the sandy bottom. To the west, a cleaning station is home to a colony of blue-spotted groupers. Other species observed in the area include western flying fish and razor fish. During winter months, schools of snappers can be spotted in the shallower regions.
Arari
Arari is a shore dive site characterized by its dynamic underwater landscape, featuring notable formations such as the West Root and the Horse Mackerel Root. Located just 5 minutes from the harbor, it is accessible for divers who prefer not to use a boat. The site is particularly known for its stingray population, with encounters peaking during early summer, where divers may see multiple stingrays at once. As autumn approaches, visibility tends to improve, revealing a fascinating array of marine life, including kampachi and sunfish. Divers can also observe large schools of snappers that remain motionless in the offshore roots, creating a unique diving experience. The site offers excellent opportunities for both macro and wide-angle photography, with subjects ranging from seahorses to lionfish clinging to the walls, making each dive a chance for new discoveries.
Atami
Atami is a notable dive site located in Higashi-Izu, accessible from Tokyo in approximately two hours. This shore entry site features a unique underwater landscape characterized by roots and wrecks, which are home to a variety of colorful luminal enteropods. Divers can also discover soft corals that host numerous macro-organisms, enhancing the visual experience. The site is particularly popular among divers from the Kanto region, making it a viable option for day trips.
Atami Kosoga Cave
Atami Kosoga Cave, located in Shizuoka, features a semi-enclosed cave that extends 40 meters in length and is situated at depths ranging from 6 to 12 meters. The cave is accessible from November to April and is suitable for beginner divers due to its spacious interior and open ceiling, which allows sunlight to illuminate the area, creating a blue gradation effect. The site is home to schools of snappers, rockfish, and mackerel, which can be seen moving through the light. Additionally, the sandy areas nearby may conceal sharks and bullhead sharks. Entry to the site is via the shore, making it convenient for divers.
Atami Wreck
The Atami Wreck, known as the Asahi 16, is a gravel transport vessel that lies split in two beneath the surface. This shipwreck is situated in sandy surroundings, providing a unique habitat for various marine species. The bow area features a winch that attracts a variety of colorful fish, while the hull is adorned with soft corals that often shelter flounder. Divers can observe anemones, anthias, and red snapper near the bow. The site is accessible from the shore, with descent ropes available at both ends, enhancing the diving experience.
Beach Bum
Beach Bum is an outdoor artificial pool located just 5 minutes from Keikyu Misakiguchi, providing a controlled environment ideal for diving and snorkeling training. The site is easily accessible from the shore, making it suitable for beginners and those practicing their skills. While there is no marine life present due to its artificial nature, divers can enjoy scenic views of the sea and Mt. Fuji, particularly during April sunsets when the sun aligns perfectly over the peak.
Bitagane
Bitagane is situated near the wreck at Atami and features fixed buoys marking depths between 18 to 20 meters. The western side, known as No.1 root, maintains a depth of approximately 20 meters, while the eastern side, or No.2 root, descends to around 30 meters. The site is characterized by strong currents that draw in a variety of fish species. Seasonal gatherings of anthias can be observed around the reef, and coral anemones at No.2 root provide habitat for clownfish and damselfish. Additionally, transient species are frequently spotted in this area.
Bizen
Bizen is located on the west side of Kushimoto and features a deep point reaching approximately 18 meters beneath the anchor. The site includes two prominent roots near the anchor and is characterized as a channel. The sandy areas on the west and south sides are notable, with the southern sandy region serving as a spawning ground for cuttlefish during certain seasons. To the north, divers can explore a series of coral reefs, leading to a sandy bottom that extends to depths of about 25 to 27 meters. The site typically experiences minimal current, making it accessible for divers of all skill levels. In the northern sandy area, gobies are frequently observed as water temperatures rise. The coral reefs host various marine life, including jawfish, frogfish, and razorfish. Additionally, during winter months, large schools of yellowtail can often be seen, while gimpfish are present year-round near the large roots.
Bounotsu
Bounotsu is situated on the western side of the Satsuma Peninsula, facing the East China Sea. The site allows for diving at various times, depending on wind conditions. Visibility ranges from 10 to 30 meters. Water temperatures can vary significantly, with readings of 8.5 degrees Celsius in September and potentially reaching up to 30 degrees Celsius. Divers can experience a drift dive at the drop-off, where sightings of larger marine life are common, including blue snapper, sea turtles, bluefin tuna, humpback snappers, and stingrays. Additionally, large schools of humpback snappers, flathead damselfish, and sea anemones can be observed, along with occasional appearances of kuei and cod rays.
Budaine
Budaine is located near Kamikimoto Island, which is uninhabited and accessible via a 20-minute boat ride from the harbor. This dive site is known for the seasonal presence of hammerhead sharks, particularly from summer to autumn when the Kuroshio Current influences the area. Divers can also encounter sandbar sharks and blacktip sharks. The current can attract a variety of large pelagic species, including sunfish, sailfish, whale sharks, manta rays, and eagle rays, making it a notable location for marine life observation.
Bumb Tokyo Sports Culture Center
The Bumb Tokyo Sports Culture Center is situated in Yumenoshima, Koto-ku, Tokyo, and features a 25-meter indoor pool. This facility is designed for various swimming activities, promoting health and relaxation in a controlled environment. As an indoor site, it does not host any marine life, making it suitable for training and recreational swimming. The center is accessible via shore entry.
Chū hana No.2
Chū hana No.2 is located in Kuki, Owase City, Mie, along the Sea of Kumano. This dive site reaches depths of up to 32 meters and is known for its diverse marine life. Divers can encounter schools of cherry snappers, various nudibranchs, and occasionally green turtles. The site also features larger species such as giant groupers and catsharks. The warm winters in this area are influenced by the Kuroshio Current, making it a favorable diving location.
Dougashima
Dougashima, located in Nishi-Izu, Shizuoka, features diverse underwater landscapes and a variety of marine species. The site includes entry points from the Tenmado-do Cave and Saku-ne, with the presence of undersea hot springs. It is suitable for divers of all experience levels and showcases different marine life throughout the seasons. Notable species include snappers, yellowtails, amberjacks, nudibranchs, morays, red-spotted shrimp, and aobudai, along with seasonal sightings of sunfish. The site offers opportunities for both macro and wide-angle photography.
Enokuchi
Enokuchi is a notable dive site located on Mikomoto Island, characterized by its average depth of approximately 20 meters. Divers often navigate towards a prominent root structure known as 'Kadone' situated to the west. The site is particularly significant from summer to fall, as it attracts a variety of shark species, including hammerhead sharks, making it an important habitat for these marine animals. The entry to the dive site is from the shore, allowing for easy access to the underwater environment.
Enoura
Enoura is located on the west side of Kanagawa in the Nishishon area, providing a safe diving experience with a sloped entry and underwater guide ropes. The maximum depth at this site is 16 meters, making it suitable for beginner divers. Divers can follow the guide rope to discover a Doraemon statue positioned at 15 meters. The site features various underwater structures, including reefs, caissons, and grottoes, and is home to diverse marine life such as snappers, frogfish, nudibranchs, and blue squids during their egg-laying season. Annual cleaning of the site occurs around November, and the best time to visit is from spring to early summer.
Fukashima Island
Fukashima Island is the southernmost island in Oita Prefecture, situated approximately 9 km south of Kamae Port. The island has a small population of around 30 residents and is known for its unique landscape, featuring a central sandbar that connects two smaller islands. Underwater, divers can explore dynamic terrain with vibrant coral reefs and soft coral beds. The marine life includes clownfish inhabiting anemone fields, as well as abundant populations of gimpo and frogfish. Schools of snapper and damsels enhance the colorful underwater scenery, while large shoals of yellowtail and sardines may also be encountered. The site is accessible via shore entry.
Fukuura
Fukuura is situated on the west side of the Manazuru Peninsula, making it easily accessible from the Kanto region. This dive site features a beach entry and is known for its significant colony of coral anemones, which spans approximately 40×40 meters and is located at depths ranging from 1 to 10 meters. The anemones are home to various marine species, including clownfish, frogfish, foxface rabbitfish, hornbills, and catsharks, providing a diverse underwater experience.
Futo
Futo is a well-known dive site located in East Izu, featuring two main beach access points. The site is equipped with ramps and handrails, facilitating easy entry and exit for divers. The conditions are generally calm, making it suitable for beginners. From June to August, divers can observe large squids spawning in the area. The beach is also rich in marine life, showcasing a variety of anemones and numerous clownfish.
Futou
Futou is located in Nishi-Izu and can be accessed via a shore entry. The site features a mix of sandy areas leading to rocky terrain, with notable geological formations including caves, caverns, and arches. It is suitable for night diving throughout the year. Marine life is diverse, with nudibranchs present year-round, particularly abundant in spring. Divers can also encounter stingrays, flatworms, and sharks in the sandy regions, along with the seasonal spawning of blue squids during spring.
Glass World
Glass World is situated at one end of a tidal cape, featuring a shallow area approximately 8 meters deep near the anchors. The site has four main anchor points, with depths reaching around 15 meters at the other locations. Divers will encounter clusters of white corals, which should not be touched to preserve the habitat. The sandy bottom and root structures require divers to maintain neutral buoyancy to prevent sand disturbance. The area experiences minimal current, making it accessible for divers. Common marine life includes green turtles resting in the shallow Shikoro coral zone, various wrasse species, macro creatures like jawfish and seahorses in sandy patches, and schools of snappers, particularly solas snappers near the roots and shallows.
Goto Islands
The Goto Islands consist of over 140 islands located approximately 130 km west of Nagasaki, accessible by boat in about 90 minutes. The intricate coastline offers numerous diving locations. The area is influenced by the Tsushima Current, resulting in a rich marine environment with dense fish populations. Divers can observe a variety of marine life, including large migratory species such as yellowtail and bluefin tuna, as well as schools of colorful fish like sea bass and big yellowtail. The underwater landscape features both colorful corals and soft corals, enhancing the diving experience.
Grott 1
Grotto 1, located in Minami Ise, Mie, is known for its unique cave-like structure where light penetrates the cavern. The site features a depth of over 25 meters, where divers can observe various marine species including schools of tuna, blacktip reef fish, Japanese snook, and snappers. The area is also home to Dall's shark, kuei, frogfish, and nudibranchs. Surrounding roots at greater depths provide habitat for rock lobsters and enhance the underwater scenery.
Hamayu Beach
Hamayu Beach, located in Minami Ise, Mie Prefecture, is a tranquil dive site situated in Gokasho Bay. The site is characterized by shallow depths and minimal current, making it suitable for beginner divers, training sessions, and refresher dives. Throughout the year, divers can observe a variety of marine life, including octopus, small fish, nudibranchs, and seasonal jellyfish blooms. The underwater environment also features diverse seaweeds and ascidians, contributing to the rich biodiversity found in these shallow waters.
Hasama Ocean Park
Hasama Ocean Park is located in the inner bay of Tateyama on the Boso Peninsula. The primary method of access is via boat, with the nearest dive point, known as 'Takane', situated approximately 5 minutes from the harbor. This site features a shrine and a large torii structure submerged in the water. Divers can expect to encounter a variety of marine life, including soft corals, colorful fish, lobsters, nudibranchs, and frogfish.
Hatsushima Island
Hatsushima Island is the only inhabited remote island in Shizuoka Prefecture, located approximately 10 kilometers from Atami, accessible by a 30-minute ferry ride. Divers can engage in beach diving or boat diving around the island. The underwater environment is rich with macro life, including nudibranchs and various shrimp species, as well as cat and scorpion sharks. In winter months, these species may also be observed as danglers, adding to the site's biodiversity.
Haunted Mansion
The Haunted Mansion at Lake Motosu is a freshwater dive site characterized by a prominent sunken tree surrounded by algae, which gives it a unique appearance. Situated at an altitude of 900 meters, this dive requires careful buoyancy control. Divers can expect to encounter a variety of freshwater species including black bass, catfish, and nudibranchs, along with other aquatic life such as ayu, wakasagi, and various types of carp. The site offers a diverse ecosystem with macro life present among the submerged trees and vegetation.
Hayakawa
Hayakawa, located in Odawara, Kanagawa, is a shore dive site suitable for beginners. The site features shallow and calm waters with sandy bottoms and artificial reefs. Divers can encounter a variety of marine life, including horse mackerel, amberjack, seasonal migratory fish, spiny dogfish, catsharks, and winter dungeness crabs. The area is also rich in nudibranchs and macro life, making it an interesting spot for underwater photography. Diving conditions are favorable year-round, allowing for diverse diving experiences.
Hebi no kuchi
Hebi no kuchi features a combination of layered rock formations and sandy areas, reaching depths of approximately 20 meters. The site is home to a variety of marine life, including black rockfish, sparrowhawks, yellowfin wrasse, and green reef fish. Divers can also observe blue corals, soft corals, anemones hosting clown shrimp, as well as nudibranchs. The presence of trevally, squid, scorpionfish, shrimps, mussels, crabs, and sea slugs adds to the biodiversity of this dive site.
Hirasawa
Hirasawa, located in Numazu, Shizuoka, features calm seas throughout the year, making it suitable for divers of all skill levels. The site has multiple entry points and presents a variety of underwater landscapes, including sandy bottoms, rocky reefs, and coral colonies. It is an excellent location for both macro and wide-angle photography due to the diverse marine life present. Notable species include Goby Goby, Negoribo, Frogfish, Sea Slugs, Blue Squid, Cuttlefish, Nudibranchs, and Sparrowhawks, providing ample opportunities for observation and photography.
Hokkawa Kajikaki
Hokkawa Kajikaki, located in Higashi Izu, Shizuoka, is a boat dive site situated just 5 minutes from the harbor. The dive depths range from 12 to 24 meters, with an average depth of 14 to 16 meters, making it suitable for divers of all experience levels. The site is characterized by colorful soft corals and is home to large schools of horse mackerel, as well as various marine species including Japanese horn sharks and wrasse. Additionally, divers may encounter catsharks, basking sharks, frilled shrimp, Pikachu sea slugs, and blue anglerfish. Access to this site is convenient, requiring a 1.5-hour Shinkansen trip from Tokyo.
Hozaura Nakahirase
Hozaura Nakahirase, located in Minami-ise, Mie, features a calm dive environment along the rias coastline, surrounded by mountainous terrain. The site offers stable sea conditions throughout the year and reaches depths of up to 24 meters, making it accessible for divers of all experience levels. Divers can enter the water from the shore, with rafts available to facilitate various entry techniques. Marine life at Nakahirase includes schooling black rockfish, snappers, juvenile clownfish, zebra and warty crabs, monkfish, lobsters, and soft corals, including spiny scorpionfish.
Iki Island
Iki Island, situated in the Genkai Sea, spans 17 km from north to south and 14 km from east to west. The island's underwater environment is characterized by vibrant soft corals and a variety of seaweeds. The currents bring in plankton, which attracts numerous fish species. In the fall, divers can observe large schools of yellowtail, flathead mackerel, groupers, and stingrays, along with the occasional sighting of Etisian jellyfish during winter months. Additionally, there are notable megaliths in the area that appear to have been shaped by human activity, adding an intriguing element to the dive experience.
Inatori Port
Inatori Port, located in Higashi Izu, faces south and provides stable sea conditions throughout the year, even during narai winds. The site features a 700-meter stretch of gorota and white sand, making it accessible for divers of all experience levels. Underwater guide ropes and buoys facilitate navigation, enhancing the self-diving experience. Marine life includes schools of snappers, clownfish, honeyeater anemonefish, nudibranchs, frogfish, as well as sightings of turtles and eagle rays.
Ishibashi
Ishibashi is located near the city center, making it accessible for day trips with the potential for multiple dives. The site features a beach entry that involves descending a slope leading to a rocky area. After approximately 100 meters of swimming offshore, divers will reach a broad sandy expanse. Seasonal marine life includes dandelion fish, particularly in their early life stages, and a variety of nudibranchs. Frogfish are present year-round, along with catsharks and glass gobies.
Isuzumi Reef
Isuzumi Reef features a flat root structure that extends into sandy areas, with two buoys marking shallow and deeper sections. The dive site experiences minimal current, making it accessible for divers of all skill levels. A prominent feature of the reef is a large arch within the root, where clusters of soft corals thrive and provide a habitat for various marine life. In the shallower regions, divers can observe schools of giant snappers and butterfly fish, particularly during the summer to autumn months when butterfly fish often gather in large groups. Additionally, the tunnels in the area are home to kelp and threadfin fish, which can frequently be seen resting.
Ita
Ita, located in Numazu City, Shizuoka, is a well-known beach dive site in Nishi Izu, recognized for its clear waters often referred to as 'Ida Blue.' The site features a gentle rocky slope that accommodates divers of all skill levels and supports a diverse marine ecosystem with a good tidal flow. It is suitable for both macro and wide-angle photography, making it a popular choice for divers throughout the year. Marine life includes schools of snapper, hawkfish, and yellowtail, along with macro species such as frogfish and nudibranchs. Seasonal highlights feature spawning squid and the presence of sea turtles.
Ito
Ito is a dive site located in Tateyama, Boso Peninsula, Chiba Prefecture. This site is known for its impressive marine life, including large groups of baited sharks and stingrays, as well as significant sightings of groupers. Divers can observe more than a dozen sharks feeding at one time. The dive is conducted from a boat, with buoys marking either end of a long, narrow root. Depending on the current, fish may enter from one buoy and exit from the other, creating dynamic viewing opportunities.
Izu Oceanic Park
Izu Oceanic Park is a prominent dive location in Higashi-Izu, accessible from the shore. The site features a variety of marine life, including rare macro species such as frogfish, as well as seasonal migratory fish. Sandy areas are home to stingrays and wobbegongs, with frequent sightings of sea turtles. The facilities include a pool, making it a popular spot during the summer months when beachgoers frequent the area.
Izusan
Izusan, located in Atami, Shizuoka, is a boat-entry dive site characterized by clear waters and a rich diversity of marine life. The site is suitable for intermediate to advanced divers and features a variety of underwater environments, making it ideal for both macro photography and wider shots. The area is home to species such as snappers, yellowtails, longnose hawkfish, bullhead wrasse, cocklefish, nudibranchs, and frogfish, appealing to those interested in both macro and migratory fish. The site maintains stable conditions throughout the year, providing a vibrant underwater landscape.
Jabne
Jabne, located on Kamikomoto-jima Island in Shimoda, Shizuoka, is an advanced dive site characterized by strong currents and varied underwater terrain. This site is notable for sightings of hammerhead and white sharks, as well as large schools of migratory and resident fish, including amberjack, wrasses, yellowtail, and hawksbill turtles. Rare sightings of sailfish further enhance the site's rich marine biodiversity, providing a dynamic diving experience.
Jogashima
Jogashima is situated at the southernmost tip of the Miura Peninsula in Kanagawa Prefecture, marking the boundary between Tokyo Bay and Sagami Bay. Access is available via a bridge, making it a convenient location for divers from the Tokyo area. During spring, divers can observe over 30 species of nudibranchs in a single dive. The site also hosts a variety of macro-organisms, including dangling fish, seahorses, snails, cuttlefish, and moss damselfish. Additionally, large schools of black marlin and lobster fish can be encountered here.
Kadone
Kadone is located near Enokuchi and Mitsu-ne on Kamikomoto Island, characterized by significant tidal influences that can make diving conditions challenging, especially for novice divers. The reef depth ranges from 22 to 25 meters, with a peak depth of 19 meters before it drops sharply to 45 meters. This site is notable for the seasonal migration of hammerhead sharks and various other shark species, contributing to its importance as a shark habitat.
Kamene
Kamene is located at the southernmost tip of Mikomoto Island and is recognized as a significant site for observing hammerhead sharks and white-tip reef sharks. The area serves as a crucial habitat for various shark species, particularly during the summer to fall months when these species are most commonly encountered. The dive site is accessible from the shore, allowing divers to easily enter the water and explore the underwater environment.
Kanaya Sunset Beach
Kanaya Sunset Beach, located in Futtsu, Chiba, is approximately an hour from Tokyo. This site is known for its macro life, particularly nudibranchs and moss blennies, making it ideal for underwater photography. The beach provides calm conditions suitable for beginner divers, who can also utilize the on-site saltwater pool for practice. The area offers scenic views of Mt. Fuji and is recognized as a year-round destination for observing diverse small marine creatures.
Kashima Coral Beach
Kashima Coral Beach, located on the uninhabited Deer Island within National Park Special Protection Area No. 7, features a dramatic underwater slope that descends steeply at a 45-degree angle. The area is characterized by a diverse ecosystem, with coral formations and shallow bays that provide habitat for various small fish. During the summer months, this site attracts large schools of yellow croaker, while predatory species such as kampachi, horse mackerel, and squid gather to feed. The marine life here includes porgy fish, snappers, groupers, scorpionfish, rockfish, yellowtail, turtles, rays, and occasionally rare sharks. The abundance and size of the fish make this site notable for divers.
Kashiwajima Island
Kashiwajima Island is located at the southwestern tip of Shikoku, with a circumference of less than 4 km. This island is part of a national park and is connected to the mainland via a bridge, allowing for shore access. Divers can expect to see a diverse range of marine life, including juvenile fish, migratory species, mouth-rearing jawfish, spawning green squid, and various nudibranchs. Notably, the area is home to the rare blue-eyed goby, humpback goby, and inazebos, which are considered endemic to the island.
Kawana
Kawana, located in Ito City, Shizuoka, features calm waters and diverse underwater topography. The site is accessible via shore entry, making it suitable for beginner divers. Throughout the year, divers can encounter a variety of marine life, including frequent sightings of sea turtles and nudibranchs. During spring and summer, gobies are commonly observed, while fall and winter highlight the presence of nudibranchs. Boat dives during the summer months reveal soft coral formations, enhancing the diving experience.
Kode no dokutsu
Kode no dokutsu features an underwater cave that measures 25 meters in length and 10 meters in width. The cave is relatively shallow, allowing divers to explore at a leisurely pace while searching for large rays and sharks that may be found resting within. The cave's exit is notable for its blue glow, and the upper areas are populated with schools of lanternfish and various marine species, providing a visually striking experience when illuminated. The cave environment supports a variety of fish, including groupers and shrimp, with tiger fish commonly found in the shallower sections. Additionally, large dogfish sharks have been observed resting in the cave, contributing to the site's diverse marine ecosystem.
Koganezaki
Koganezaki is situated within Koganezaki Park, providing easy access for divers with ramps and handrails for entry and exit. The dive site features a variety of sandy and rocky areas, with depths reaching a few meters where divers can observe a diverse range of marine life. Notable species include nudibranchs, sea tigers, red-headed gobies, tigerfish, and clownfish, which inhabit the ropes, rocks, and sandy substrates. The underwater landscape transitions from shallow gorotas to expansive sandy surfaces, making it a suitable location for divers of varying experience levels.
Koino Ura
Koino Ura is located in Fukutsu City, providing access to the Genkai Sea. This dive site is particularly suitable for beginners due to its easy shore entry and exit. The area is known for sea turtles that come to nest in July. Divers can encounter a variety of marine life, including scorpionfish, stingrays, mackerel, snappers, sunfish, flatfish, and yellowfin reef sharks. From winter to spring, various nudibranchs can also be observed.
Koyoko Island
Koyoko Island is a dive site accessible by boat, located at coordinates 32.935400, 132.409500. The site features a calm entry point at a depth of 5 meters, making it suitable for beginner divers. Divers can explore vibrant coral colonies and observe various marine life, including schools of yellowtail snapper, groupers, and different snapper species. The underwater caves present at this site are home to fish that thrive in dimly lit conditions, such as gibbons, gobies, and southern longspine snappers. Occasionally, divers may encounter rare species like ragged scorpionfish, sharks, and adult butterflyfish. It is advisable to dive during low tide due to the potential for stronger currents, enhancing the overall diving experience.
Koza River Nukumi
Koza River Nukumi is a freshwater dive site located along the Furuza River, known for its clear waters. Divers can encounter the giant salamander, which is recognized as a national natural monument, particularly in the upstream region, approximately one hour from Furuza town. The site also hosts various freshwater species, including amago, eels, ayu, catfish, and crustaceans like mole crabs and shrimps. Additionally, amphibians such as the red-bellied newt and freshwater insects like goatfish and kingfish can be observed. The entry to the site is from the shore, making it accessible for divers looking to explore this unique river environment.
Kreisel
Kreisel is situated at the entrance of a bay, providing stable sea conditions that accommodate divers of all experience levels. The site is characterized by dynamic rock formations, including arches and holes. Marine life is diverse, featuring species such as frogfish, longfin trevally, yellowtail, amberjack, and hammerhead sharks. Additionally, during the winter to spring months, divers may encounter dungfish and snubnose pompano. Various nudibranchs, including the midget lamprey, purple sea slug, and western barnacle, can also be observed here.
Kujyukushima Islands
The Kujyukushima Islands, located in Nagasaki Prefecture, comprise a sea area with a high concentration of islands, extending 25 kilometers north of Sasebo Port. This dive site can be categorized into the nearby Kujuku Islands area and an expedition area. Divers can expect to encounter a diverse range of marine life, including various nudibranchs such as Sea Slug Nudibranchs and Sessile Nudibranchs. Other notable species include Leaf Shrimps, Blue Ribbon Fish, Blue Ribbon Goby, Squid, and Crabs. The entry to the dive site is from the shore, providing access to these rich underwater ecosystems.
Kumomi Ushitsukiiwa
Kumomi Ushitsukiiwa is a notable cave diving location situated along the Izu coast. It features numerous caves and overhangs located between two prominent rocks known as Ushitsukiiwa, positioned directly in front of the harbor. Divers can observe a variety of marine life, including soft corals that attract sea goldies and butterflyfish. At the offshore point, large schools of chicken grunts and sizable groupers, referred to as 'kue,' can be encountered. The site is accessible via a shore entry, making it convenient for divers to explore its underwater features.
Kurohae
Kurohae is located in a National Park Special Protection Area and is known for its diverse marine life. The site features a significant number of fish species, including snappers, groupers, scorpionfish, and schools of rockfish. Additionally, divers may encounter amberjack, yellowtail, turtles, and occasional sightings of sharks, rays, frogfish, and flatfish. The underwater landscape includes a hard coral colony to the north and a large soft coral colony to the south, along with nannyo goatfish. Due to often strong currents, diving is best undertaken during favorable tide conditions. This site allows divers to experience a concentrated variety of marine ecosystems in one location.
Kushimoto
Kushimoto, located at the southern tip of Honshu, is significantly affected by the Kuroshio Current, which brings a diverse range of tropical fish species from Okinawa and Izu. This area is recognized as one of Japan's prime fishing locations. Throughout the year, divers can observe the unique Azahata fish, along with fringed shrimp, nudibranchs, and jawfish. During the winter months, larger species such as razor sharks, spiny stingrays, and common spiders become more prominent. The site is accessible via shore entry, making it convenient for divers.
Marine Center Front
Marine Center Front is accessible from the shore and features a sloped terrain that requires caution when handling equipment to prevent falls. During low tide, rocks become exposed at the entry point, so it is advisable to dive during high tide when the waters are calm and shallow, facilitating easier diving. Divers should be mindful of coral clusters and maintain neutral buoyancy while exploring the area. At a depth of 5 meters, divers can encounter schools of mullet and whitebait, along with the well-camouflaged Kaikamuri crab. Additionally, sightings of pufferfish, damselfish, and potentially frogfish are possible in this underwater environment.
Masakijima
Masakijima is a small island located in Ago Bay, Mie Prefecture, accessible by a 10-minute boat ride from Kintetsu’s Kenshima Station. The site features calm and clear waters with a maximum depth of 10 meters, making it suitable for snorkeling and beginner divers. The gentle conditions are ideal for families and entry-level divers throughout the year. Marine life includes colorful species such as Solas Pollack and butterfly fish, with seasonal appearances of red barracuda and blue-finned dace during the summer and fall, enhancing the experience for novice divers.
Miho
Miho is a dive site located near Miho no Matsubara, characterized by a gravel beach entry. Divers can descend along a gentle slope reaching a depth of 5 meters, followed by a steep drop-off that extends down to 18 meters before leveling out. The sandy areas are home to various marine life, including sea horses, frogfish, and rare gobies. During winter months, divers may observe the spawning behaviors of red snapper and rusty goby, while summer brings bluefinches to the area for their own spawning activities. Additionally, a nearby river provides opportunities to witness a salmon run.
Mikurajima Island
Mikurajima Island is home to over 200 wild dolphins, offering a unique opportunity for skin diving to interact with these marine mammals. Scuba diving is not permitted at this site. Visitors can access the dolphins by landing on the island and approaching them via a small boat. While this location is recognized as one of the prime spots in Japan for swimming with wild dolphins, encounters are not guaranteed. The dolphins are individually identified and are under strict protection, meaning they cannot be touched during interactions.
Minami Ise
Minami Ise, located in Mie Prefecture, features a rias coastline characterized by calm inner bays that are suitable for beginner divers and macro enthusiasts. The site is also known for its dynamic terrain and soft corals in the open ocean, appealing to those interested in wide-angle photography. The marine life includes year-round populations of snappers and mackerels, with seasonal appearances of frogfish and nudibranchs in spring, and rockfish in early summer. The site can be accessed from Nagoya or Osaka within 2 to 3 hours, making it convenient for day trips.
Mitsune
Mitsune is located on the northern side of Mikomoto Island, where divers can observe the effects of both low and high tides. The site features three distinct root formations, with the western side characterized by a flat, gradual descent, while the eastern side presents a cluster of roots. This area is known for seasonal migrations of hammerhead sharks and other shark species, making it an important habitat for these marine animals.
Motosuko Lake
Motosuko Lake, located at an altitude of approximately 900 meters, is the deepest of the Fuji Five Lakes, reaching a maximum depth of 122 meters. This freshwater diving site is recognized for its unique aquatic environment. Divers can expect to see various species such as black bass, Magoi, and Nishikigoi congregating around submerged giant trees. Additionally, catfish, woodpeckers, sailfish, and nuthatches can be observed at the lake's bottom and among the rocky areas. Diving here requires adherence to altitude diving procedures due to the elevation.
MTK Beach
MTK Beach is situated on the eastern side of the Kii Peninsula, providing convenient access from both the Kansai and Chubu regions. The dive site is located within Guki Bay, characterized by a long and narrow cove where the sea conditions are generally calm. The underwater environment is rich with hard corals, including green reefers and various blue and white corals. The sandy substrate supports a diverse population of goby species, while anemones host numerous shrimp. Divers can expect to encounter larger marine life such as yellowtail, grouper, korodai, sharks, stingrays, and sea turtles with a high likelihood of sightings.
Mutsu (Wreck)
The Mutsu wreck is the only sunken battleship of the Japanese Navy that is accessible for viewing in Japan. Located off Katsura Island in Yamaguchi Prefecture within the Seto Inland Sea, the wreck measures 224 meters in length and 34 meters in width. It rests at varying depths from 10 to 40 meters. Divers can observe marine life such as mackerel and yellowtail throughout the year. The entry to this site is from the shore.
Nakagurumi
Nakagurumi is characterized by scattered reefs situated on sandy substrates, where water flow is typically low, leading to reduced visibility. Divers are advised to utilize a rope for their descent and to manage their buoyancy and fin movements carefully to minimize sand disturbance. The site reaches a maximum depth of approximately 10 meters and contains small tunnels. Currents are generally weak, making it accessible for divers. Marine life commonly observed includes schools of spotnape cardinalfish and lionfish, along with juvenile yellow boxfish, which are often favored by divers.
Nazumado
Nazumado is located on the western side of the island, directly facing Hachijo Kojima. This dive site features a unique setup with ropes that assist divers in entering and exiting a walled reef that descends steeply. Divers can observe a significant population of sea turtles, which are known to approach closely without fear. In the spring, a diverse range of nudibranchs can be spotted, varying in size from small to large. The site is also home to Juuzen, a butterfly fish species endemic to Hachijo Island and the Ogasawara Islands, which can be seen as juveniles. During the spring, these fish gather to spawn, along with the rare Juuzen Tama. Additionally, Lenten sea otters, from juveniles to adults, can be observed in this area.
Nebukawa
Nebukawa, located in Odawara City, Kanagawa, is an underwater archaeological site that features the remnants of the former Nebugawa Station, which was submerged due to the Great Kanto Earthquake. The site is influenced by the Kuroshio Current, supporting a diverse range of marine life including schools of snappers, green sea fans, moss blennies, mantis shrimp, sea turtles, frogfish, dungfish, and various nudibranchs. The entry is from the beach, making it accessible for divers of all experience levels.
Nishikawana
Nishikawana is situated at the tip of Tateyama on the Boso Peninsula. This dive site is accessible only by boat and features a maximum depth of 25 meters, with an average depth ranging from 15 to 16 meters. The underwater landscape consists of rocky reefs, gorota stones, and sandy areas. Divers should be cautious as currents can be swift at times. The site is known for its diverse marine life, including large fish such as Kue, schools of sunfish, and damselfish. During the summer months, schools of stingrays can be observed, along with a notable black sea eel that resides in the area. Additionally, large migratory fish are often seen chasing smaller fish in the summer season.
Nishiumi
Nishiumi is situated at the southwestern edge of Ehime Prefecture, adjacent to Kochi Prefecture, near the West Sea Peninsula and southwest of Aina Town. While boat diving is the primary method of exploration, divers can also access the site via the beach. The marine life includes semicirculated angels, red Anthias, red-headed snapper, Keramahana snapper, scorpionfish, various frogfishes, rainbow runners, and jacks. Notably, Bullshead Sharks are commonly observed during the months of May and June.
Noa Front Beach
Noa Front Beach offers shore access for divers looking to explore the underwater environment. The site is known for its clear waters, often referred to as 'Susami Blue,' and is home to a variety of marine life. Divers can expect to see abundant nudibranchs and a range of macroscopic creatures, including anchovies, black-eyed clams, spotted gobies, and groupers. Additionally, schools of red clams and puffins can be observed, along with significant populations of dwarf dallions and sablefish, which can number between 500 to 1,000 individuals.
Noris Osaka Diving Pool
The Noris Osaka Diving Pool, located in Chuo-ku, Osaka, is a heated training facility featuring depths of 1.2 meters and 4.5 meters. The pool is equipped with a mirrored wall that allows divers to assess their form and buoyancy, making it suitable for skill enhancement across various diving levels. The facility does not contain natural marine life; instead, it utilizes mannequins and obstacles for practice. Additionally, it offers filming opportunities for mermaid swim lessons, catering to different diving styles.
Noris Pool
Noris Pool, located at 34.629200, 135.039300, features a 5-meter-deep training pool directly in front of the diving school, providing a controlled environment for divers of all skill levels. The site is part of the urban diving school Noris Kobe Maiko, which also offers access to Maiko Beach. This location allows for night dives and is situated near the Akashi Kaikyo Bridge, enhancing the diving experience with its unique urban backdrop. The area around the breakwater is known for its diverse marine life, making it suitable for both training and recreational diving.
Nyanko Rock
Nyanko Rock is located approximately two minutes by boat from the West Sea, with an option for a 25-minute swim for those seeking a challenge. This site is typically chosen for the first dive due to its deeper average depth, making it suitable for deep diving training with depths reaching up to 40 meters. The marine life here includes various fish species such as snappers, groupers, scorpionfish, and schools of rockfish. Additionally, divers may encounter turtles, and occasionally sharks, rays, frogfish, and flatfish. Jawfish are particularly abundant in this area, enhancing the diving experience.
Occhogahama
Occhogahama is located at the southwestern tip of the island and features a beach entry with dedicated stairs. The site is notable for a large cave that attracts various marine life, particularly numerous species of nudibranchs, including the Great Crested Nudibranch and Bob’s Sun Nudibranch. Inside the cave, divers can encounter creatures that thrive in dark environments, such as blue clams, lobsters, and sea turtles. Additionally, rare crustaceans like fritillary shrimps and snail crabs can be found hiding beneath the cavern at the cave's end.
Oike
Oike, located in Aigaura, Minami Ise, is a unique marine lake with a maximum depth of 7 meters, making it suitable for beginner divers and training purposes. The site is abundant in macro marine life, including Satsuki and Tatsu gobies, as well as Chagara and blue sea urchin nudibranchs. Divers may also encounter larger fish species such as Kaiwari and barracuda, providing a range of underwater experiences. The nearby boat sites enhance the diversity of marine life, featuring schools of whitebait and additional nudibranchs.
OK Marine Pro
OK Marine Pro is located a short 4-minute walk from Nerima Station. The facility features a diving pool with two distinct depths of 1.2 meters and 5 meters, allowing for varied practice opportunities. The first and second floors are dedicated to the diving pool, while the third floor serves as the information and reception area. An elevator is available for direct access to the third floor.
Okinoshima Island
Okinoshima Island is situated approximately 70 kilometers north-northwest of Fukuoka City and was designated as a World Heritage Site in 2017. Access to the island is exclusively by boat, with a travel time of around two hours. The dive site features diverse marine life, including large schools of sea squirts, hawks, and hawk eels. Divers can also encounter significant migratory species such as Hiramasa and kangpachi. The underwater landscape is characterized by vibrant soft corals, where red snapper and yellow snapper can be observed swimming among them.
Okubo Hama
Okubo Hama is situated in the northern region of Miyakejima and is accessible only via a beach entry. The underwater landscape is characterized by lava formations that extend into the sea, with roots visible offshore. The dive site offers a significant area to explore both to the east and west, but divers cannot complete a full circuit in a single dive. The site is notable for its diverse macro life, including the presence of Japanese Pygmy Seahorses. Along the walls of the lava roots and in the shallow waters above, a variety of marine organisms can be observed. A prominent overhang provides habitat for numerous scorpionfish, and sea turtles are frequently spotted in the shallower areas.
Orange Forest
Orange Forest, located in Minami Ise, Mie, is a boat-access dive site with a maximum depth of 22 meters. The site is characterized by clear waters and is home to various marine species, including schools of yellowtail and bluefin squid. Divers may also encounter hammerhead sharks. In deeper sections, macro life such as Ayatolla and Xanthocorallis clownfish, as well as blue-spotted and yellow coral clown shrimp, can be observed, making it suitable for both wide-angle and macro photography.
Owase
Owase is situated on the eastern side of the Kii Peninsula, providing convenient access from both the Kansai and Chubu regions. The area features a rias-style coastline with complex terrain and several islands that serve as key points of interest for divers. The site allows for shore entry, making it accessible for divers. Marine life is abundant, with sightings of large yellowtail, mejina, black-eyed fish, and sizable groupers. During the summer to autumn months, tropical species such as clownfish, honeycomb damselfish, hornbills, and bluefin damselfish can also be observed. Additionally, divers may encounter larger species including sting sharks, cat sharks, large stingrays, and sea turtles.
Pineapple Rock
Pineapple Rock, located in Minami Ise, Mie, is accessible by boat and features depths reaching 16 meters. The site is characterized by a prominent pineapple-shaped root that attracts various marine species, including schools of snappers, butterflyfish, and resting dorado sharks. Divers can also observe nudibranchs, turtles, rays, smelt, and winter anglerfish, as well as diverse life in the rock crevices and benthic zones. Visibility typically ranges from 15 to 17 meters, making it suitable for divers of all experience levels, particularly those interested in topography, macro, and wide-angle photography.
Rainbow Arch
Rainbow Arch, located in Aigaura, Minami Ise, Mie, features a prominent arch ceiling adorned with colorful soft corals. The site is inhabited by various marine species, including rock lobsters, eels, nudibranchs, and shrimp, making it suitable for both macro and wide-angle photography. The dive site is accessible by boat and is best visited from spring to fall when visibility is optimal and the scenery is particularly vibrant. Additional marine life includes Japanese rockfish, snappers, hawksbill turtles, longnose hawkfish, giant frogfish, and scorpionfish, providing a diverse underwater experience.
S Point
S Point, located in Minami Ise, Mie, is a dive site characterized by calm waters and clear visibility, making it suitable for both beginner and intermediate divers. The site features the notable 'Rainbow Arch' and a terrain adorned with soft corals. Divers can expect to encounter a variety of marine life, including migratory yellowtail, amberjack, snappers, and macro species such as nudibranchs and crustaceans. The entry to the site is from the shore, providing easy access for divers.
Sanbondake
Sanbondake, also known as Onohara Island, is located approximately one hour by boat from Miyakejima. This uninhabited reef is designated for advanced divers due to the presence of strong currents. The dive is conducted as a drift dive, and access is contingent upon favorable sea conditions. The site is recognized for its dynamic marine environment, where divers can observe large schools of fish, including migratory species like the giant campachi. Additionally, hammerhead sharks are frequently sighted, and there is a possibility of encountering a tiger shark. The area is also home to numerous sea squirts and hawks.
Senohama Reef
Senohama Reef features over 20 submerged iron boxes, each measuring 3 meters in length and width, which were intentionally sunk by the former Nishinoumi Town to create habitats for marine life. These boxes are now scattered across a sandy bottom and attract a variety of migratory fish. Divers can explore the area by navigating around the boxes, with opportunities to observe numerous species including sparrowfish, snappers, groupers, scorpionfish, and schools of yellowtail. Additionally, turtles, and occasionally sharks or rays, may be encountered. For those interested in macro photography, the site is known for its vibrant nudibranchs, particularly the brightly colored pikachu variety. This dive site supports a diverse ecosystem, making it suitable for both wide-angle and macro photography.
Shark City
Shark City, located in Aigaura, Minami Ise, Mie, is a sheltered bay dive site with depths reaching up to 17 meters and generally minimal current, making it suitable for divers of all experience levels throughout the year. During the summer to fall months, divers can encounter hammerhead and dorado sharks. In contrast, the winter to spring period is characterized by a rich variety of macro life, including dungeness fish, snapping turtles, and nudibranchs.
Shikanoshima Island
Shikanoshima Island is situated in the northern region of Hakata Bay, approximately 45 minutes by car from central Fukuoka. The island is linked to the mainland via a sandbar, providing easy access for divers. This site is frequently utilized for beginner diving courses due to its accessible shore entry. During the summer months, divers can observe a variety of southern fish species, including damselfish, hornbills, and black lily gobies, along with numerous nudibranchs that thrive among the abundant marine sponges. From winter to spring, divers may also encounter danglers and seahorses, adding to the site's diverse marine life.
Shimamawari
Shimamawari features a unique underwater topography resembling a large rock formation that descends from 6 meters to 30 meters. The site is characterized by steep drop-offs in all directions. On the western side, there is a small cave and a remote root structure. The area is home to a variety of marine life, including migratory species such as amberjack and yellowtails, which can often be seen due to the moderate tidal conditions. The tops of the roots are adorned with numerous corals and anemones. During winter, divers may encounter stingrays and basking sharks, while hawksbill turtles and whitebait are present year-round. The current at this site can be swift but is generally manageable for divers.
Shimura Beach
Shimura Beach, located in Katsuura, Chiba, is situated to the west of the Underwater Park. The dive site features a variety of underwater topographies with shallow areas that are suitable for novice divers. Entry is made from the fishery cooperative, where divers can utilize guide ropes, buoys, and marked lines extending to 30 meters for safe navigation during training and experience dives. Marine life observed at this site includes solitary snapper, basketfish, seahorses, dogfish, nudibranchs, dungfish, bluefin squid, horse mackerel, sardines, stingrays, basking sharks, and various species of snappers.
Shirahama
Shirahama is a well-known dive site located on the Kii Peninsula, easily accessible from the Kansai region. It has a long-standing history as a popular diving destination, particularly favored by local divers. The site offers both beach and boat entry options, making it versatile for different diving preferences. During the fall season, divers can expect to see migratory species such as hawks, pike, and yellowtail, alongside larger marine life like green sea turtles. The area is rich in biodiversity, featuring a range of both macro and larger creatures, providing a varied diving experience.
Shishihama
Shishihama is a shore dive site located near Mt. Fuji, featuring a diverse marine ecosystem. The site is known for its variety of marine life, including leaf fish, wrasse, frogfish, ghost pipefish, scorpionfish, moray eels, groupers, flounder, sea slugs, squids, octopuses, and sea turtles. Coral formations are also present, contributing to the site's ecological richness. Night diving is available daily, but reservations are required at least two days in advance. The dive site offers access to a diving pool filled with seawater, and a range of tank sizes from 6L to 14L, including Nitrox and specialized tanks for side diving.
Shobusawa
Shobuzawa, located in Kawazu-cho, Shizuoka, is situated on the east coast of Izu. This dive site is characterized by its volcanic origins, featuring unique lava formations, sandy areas, and reefs. It is accessible from the beach, making it suitable for divers of all experience levels. The site is particularly favored by macro divers throughout the year due to its clear waters and diverse marine life. Seasonal highlights include squid spawning and snappers in spring and summer, barracuda and sea bream in the fall, and various macro species during winter. Tropical fish can be observed year-round, adding to the site's appeal.
Sodaine
Sodaine is a prominent pinnacle located in Atami, Shizuoka, with depths ranging from 15 to 30 meters. The site features a sandy slope on the southeast side and a steep drop-off to the northeast, making it appealing for divers interested in varied underwater topography. Schools of snappers can be observed between 10 and 20 meters, alongside other marine life such as wrasses, Japanese snow fish, crocodile fish, and red-spotted lobsters. The best diving conditions occur from fall to winter, when visibility is enhanced, allowing for clear views of the vibrant soft corals and dynamic terrain.
Soft Coral Garden
Soft Coral Garden, located in Hozaura, Minami-ise, Mie, is a boat-entry dive site that reaches depths of up to 25 meters. This site is characterized by its vibrant soft corals and a diverse array of marine life, including seahorses, frogfish, snappers, and bumphead parrotfish. The underwater environment supports a rich variety of smaller species such as scorpionfish and nudibranchs, making it suitable for divers of all experience levels.
Sokodo
Sokodo Beach, located in the northeast of Hachijojima, is characterized by its clear waters known as 'Hachijo blue.' Divers enter from the embankment, which leads to the Mimata Arch. This site is home to various marine species, including long snappers, striped anemonefish, and bluefin squid. Seasonal squid spawning occurs here, and divers can frequently spot green turtles and sevengill snapper, making it suitable for both novice and experienced divers.
Soshimaoki-1none
Soshimaoki-1none features a dive site where the tops of the roots are located between 13 meters and 17 meters. The dive typically follows the western drop-off, which descends vertically to a depth of 30 meters. The sandy seabed is characterized by its white color, and the root structures are adorned with soft corals, including sea squirts. This site is best suited for intermediate to advanced divers due to varying currents that can occur depending on the time of day and season. The shallowest area reaches a depth of 14 meters, while the maximum depth is 30 meters. Marine life commonly observed here includes Japanese amberjack, dogtooth tuna, threadfin bream, bigfin bream, scorpionfish, and various species of lobsters.
South Rock
South Rock features dramatic cliffs along its southern slope, reaching heights of 30 meters due to significant erosion from typhoon waves. Divers can explore steep drop-offs and extensive terraces found between depths of 25 to 35 meters, making it a notable site for those interested in unique underwater topography. The marine life includes a variety of species such as snappers, groupers, scorpionfish, schools of rockfish, amberjack, yellowtail, turtles, and occasionally sharks, rays, frogfish, and flounders. However, the overall fish population is relatively smaller compared to nearby dive sites, attributed to the area's dynamic topography that offers fewer hiding spots for smaller fish.
Sumisaki
Sumisaki is a dive site located in Kushimoto, featuring a prominent pinnacle that descends to approximately 12 meters. The depth increases to a maximum of 27 meters as you move further north. The site experiences minimal current, making it accessible for divers of all experience levels. Scattered remote pinnacles can be found in the area, including one situated to the northeast and a cleaning station located to the west. Under the anchor, divers can observe snappers throughout the year, while kudagombe, glass gobies, and bannerfish are frequently seen in the northeastern section. Seasonal sightings include frogfish and nudibranchs.
Tago
Tago offers a shore entry point with access to both a bay and open sea. The bay features a notable Green Turtle Coral formation, surrounded by a variety of small tropical fish. Divers should maintain neutral buoyancy to protect the delicate seaweed coral community present in this area. In the open sea, divers may encounter kuei (Japanese butterflies) and yellowfin tuna, adding to the diverse marine life experience.
Tanabe
Tanabe is a popular dive site located near the Kansai area, offering easy access for day trips. The site is part of a larger region that includes Hoyo and Minabe, featuring over 30 dive points accessible from the shore. Divers can expect to see the striking lemon-yellow Great Mussel Anemone, along with various marine life such as damselfish, black damselfish, schools of Japanese squirrels, and horse mackerel. Notable macro species include flippers, threadfin dippers, Yanodate gobies, scalloped gobies, jawfish, and giant sea horses, making it a diverse environment for underwater exploration.
Tanegashima Island
Tanegashima Island is situated approximately 100 km south of Kagoshima and is known for its space center, where rocket launches occur. The island can be accessed from Kagoshima via a 30-minute flight or a 1.5-hour ride on a high-speed boat. The dive site features a variety of marine life, including schools of striped jacks, red flounders, yellow snappers, and stingrays in sandy areas. In the rocky regions, divers can observe yellowtails, Asian red snappers, and angelfish. Additionally, there are dynamic points where eagle rays and sea turtles can be seen. The entry to the dive site is from the shore.
Todomari no hana
Todomari no Hana, located in Aigaura, Minami Ise, is a boat-entry dive site with depths reaching up to 28 meters. The area is characterized by artificial breakwaters that serve as fish habitats, attracting a variety of marine life including dotishima, kampachi, yellowtail, and hawksbill turtles. Divers can also encounter red rock snapper, soft corals, and a range of macro species such as nudibranchs, cuttlefish, and moss blenny. The site typically experiences minimal current, making it suitable for divers of all skill levels.
Toi Beach
Toi Beach, located in Izu City, Shizuoka, is a notable dive site characterized by its calm beaches and diverse marine environments. The site is accessible from the shore and features a variety of marine life, including macro species such as bear clams, clownfish, and seahorses. Additionally, divers may encounter larger species like hammerhead sharks and white sharks. The area is particularly rich in biodiversity, with seasonal visitors like swallow and flying fish appearing during the fall and winter months. This site is suitable for divers of all experience levels, offering opportunities for both casual exploration and more adventurous dives.
Tokara Islands
The Tokara Islands are a group of small islands located between Yakushima and Amami Oshima in Kagoshima Prefecture, approximately 160 kilometers from Kagoshima. Access to these islands is limited, with only two ferries operated by local villages each week. The dive site features a variety of marine life, including schools of migratory fish such as bigeye trevally, bluefin trevally, and Napoleon wrasse. Divers may also encounter larger species like marlin, hammerhead sharks, and stingrays. Notably, there is a manta ray point at the northern end of the islands, as well as an undersea hot spring area. The entry to the dive site is from the shore, making it accessible for divers looking to explore the unique underwater environment.
Tomo
Tomo, located in Aigaura, Minami Ise, is a dive site accessible by boat. The area is characterized by intricate root structures and a diverse array of marine life. Divers can expect to encounter species such as rock cod, yellow croaker, and various butterflyfish. The site is particularly rich in macro life, with opportunities to see juvenile frogfish, yellow-spotted shrimp, and anemone shrimp. Additionally, the presence of rockfish, yellowtail snapper, pufferfish, and numerous nudibranchs, including loggerhead and red-bellied varieties, contributes to the site's biodiversity.
Toujima
Toujima is situated on the southernmost part of the Izu Peninsula, characterized by its diverse underwater scenes that change with the seasons. The site is accessible from the shore and offers opportunities to observe various marine life. In early summer, divers may encounter eagle rays, while sea turtles are present throughout the year. Occasionally, schools of hammerhead sharks can be spotted. During the winter months, humpback whales migrate offshore, providing a chance for sightings if conditions are favorable.
Triangle
Triangle, located in Manazuru, Kanagawa, features a large artificial reef constructed from a substantial steel frame that was submerged during the building of the Iwa Ohashi Bridge. This structure rises 10 meters high and spans 50 meters in width, providing a habitat for various marine species. Divers can observe schools of snappers and horse mackerel, as well as groupers and sea bass, alongside vibrant soft corals and seasonal nudibranchs. The site is accessible from the shore and is suitable for divers of all experience levels, offering opportunities for both macro photography and wider underwater vistas.
Uguru Island
Uguru Island, located 23 kilometers off the coast of Shukumo, is the southernmost town in Shikoku. The site is known for its exceptional visibility, often reaching up to 50 meters due to the influence of the Kuroshio Current. The underwater landscape features a diverse terrain with coral habitats, supporting a variety of marine life throughout the year. Divers can encounter large migratory species such as bluefin tuna, yellowtail, and bigeye trevally, along with occasional sightings of manta rays and hammerhead sharks. Sea turtles are also frequently observed. For those interested in macro life, the area offers opportunities to see species like black-and-white lily goby, kudagombe, blue-and-white snapper, and red-and-white crab. This site is accessible via shore entry, making it suitable for both novice and experienced divers.
Usami Kagone
Usami Kagone, located in Shizuoka, is a boat dive site suitable for beginners. The dive reaches a depth of 18 meters, where the sandy bottom is rich in macro life. Divers can observe Datura goby symbiosis, various nudibranchs, and different crustaceans. The area is also home to green turtles and catsharks, along with cirripedes, which can be spotted throughout the year. During the winter to spring months, hawksbill turtles may also be seen.
Usami Manbo Point
Usami Manbo Point is a boat dive site located approximately 5 minutes from shore. The dive reaches a maximum depth of 25 meters and features a rocky reef that is home to purple spiny dogtooth sharks and a variety of soft corals. Divers can expect to see a diverse range of marine life, including snappers, yellowtail, hawksbill turtles, kampachi, wrasses, catsharks, and sunfish. Additionally, macro life such as nudibranchs and crustaceans can be found in this area.
Yaene
Yaene is located on the west coast of Hachijojima and features a calm bay with a beach entry, making it accessible for divers of all experience levels. Approximately 200 meters from the shore, divers can explore a 12-meter deep arch that is home to snapping turtles and rock lobsters. The site is also frequented by green turtles, and divers can observe various macro life, including nudibranchs and bee-eaters.
Yakushima
Yakushima is an island located approximately 30 minutes by plane from Kagoshima, featuring a circumference of around 130 km and an area of 500 km². The island is home to a prehistoric forest and is known for its famous Jomon cedars. Divers can expect to encounter a variety of marine life, including large species such as bluefin tuna, bigeye trevally, bluefin trevally, reef sharks, stingrays, and occasionally hammerhead sharks. The site also offers opportunities to observe diverse macro life. Entry to the dive site is from the shore.
Yokoshima 2 gōchi
Yokoshima 2 gōchi offers a shore entry dive where divers can swim mid-water along a coral ridge, keeping it to the right. This area is known for sightings of large schools of Japanese horn sharks descending from above, as well as large stingrays and turtles in the surrounding waters. At the tip of the ridge, divers will encounter a gentle slope covered in soft corals, gradually leading to a 5-meter safety stop where kibibinago (sand eel) and various fish can be observed. After completing the safety stop, divers navigate back through a natural maze formed by the ridge. Marine life commonly seen includes porgy fish, snappers, groupers, scorpionfish, and schools of yellowtail, with occasional sightings of rare sharks and rays. Longnose hawkfish and frogfish may also be spotted among the odontocetes.
Yokoshima danso
Yokoshima danso features a unique underwater landscape characterized by a combination of hard and soft corals on a prominent monolithic rock. The dive site has depths ranging from 5 to 9 meters and extends over 1 kilometer in a linear formation. Divers can explore side holes adjacent to the monolith, which provide opportunities for swim-throughs. The shallow areas are particularly striking, illuminated by sunlight, showcasing vibrant marine life including orange-hued snappers, blue solas snappers, and various other species such as groupers, scorpionfish, yellowtail snapper, amberjack, yellowtail, cat sharks, and occasionally larger rays or sharks. This diverse ecosystem is a rare find in Japan.
Yugawara Aqua Park
Yugawara Aqua Park, located in Kanagawa, features a 25-meter swimming pool with six lanes and a depth of 1.1 meters, alongside a dedicated diving pool that reaches a depth of 4.75 meters. This facility is designed for both scuba and freediving training, providing an environment conducive to skill development. The park also includes a gym, studio, and multipurpose space, making it a resource for local divers and fitness enthusiasts. The site reopened in 2024 and serves as a training hub for those preparing for ocean dives.
Zamrud
Zamrud is accessible via a short 3-minute walk from Hon Atsugi Station on the Odakyu Line. The site features a spacious parking area that accommodates up to 410 vehicles, with a height restriction of 2.1 meters. The first three hours of parking are free, and the facility operates in two shifts, starting at 10:00 a.m. and 4:00 p.m., allowing reservations for up to five hours. Nearby, there are additional coin-operated parking options if needed. A convenience store is also located close by for supplies. The dive site offers both shallow and deep water areas, with a maximum depth of approximately 3 meters, making it suitable for various water training activities. Equipment unloading is facilitated by a loading dock, and washing stations are available for rinsing gear. The site can accommodate small groups for training without specific limits on total attendees. Swimming caps are required for competitive swimming in the pool, and visitors have the option to relax in a Jacuzzi during their time at the facility.
Zenisu
Zenisu is situated 36 kilometers southwest of Jinzu Island within the Izu Seven Islands and comprises three distinct reefs. Access to this site is exclusively via charter boat, with travel times varying from one and a half hours from Jinzu Island, three and a half to four hours from Shimoda, and up to five hours from Nishi-Izu. The dive site is known for its abundant marine life, featuring large schools of migratory fish, including sharks and green sea turtles. Divers can also observe significant numbers of butterflyfish and mackerel, along with whales that may be seen in pursuit of these schools.
Zushi
Zushi is located near the city center and is a favored location for day diving. The site is accessible via a shore entry and features a depth of approximately 30 meters with sandy soil. Divers can explore a rock wall adorned with soft corals, where schools of Yellowfin Damselfish can often be seen. Additionally, various fish species such as yellow snapper, blue snapper, horse mackerel, and yellowfin reef sharks are present. During summer months, schools of amberjacks are also observable, while winter brings an increase in nudibranch sightings.