Things to do · Country Guide
Coral to drift ice: Japan's full-spectrum water adventure
Start with the experience, then find the right place for it. Conditions and access vary between destinations.
Japan delivers huge variety across a single passport stamp: subtropical coral in the Ryukyus, volcanic walls and caves in the Izu islands, nutrient-rich temperate reefs on the Sanriku coast, and true winter ice diving in Hokkaido.
Most first trips anchor in Okinawa, then add a second region for contrast. The country also shines for shore-diving independence and post-dive comfort: clean facilities, great food, and easy transport between hubs.
Places to explore
Amami Oshima combines easy-paced coral and macro diving in Tatsugo bays with changing north-coast shore entries, while Aqua Dive Kohollo and Diving & Pension RIKI operate separate boat-diving circuits in southern Oshima Strait and around Kakeroma. Native Sea Amami lists beginner-oriented Sand Paradise and Yamamoto Special; LeapScubaAmami documents Kurasaki and Tebiro shore entries.
Pick regions by season, not just by map.
If you are schedule-sensitive, avoid committing your last day to a single must-dive. Weather can cancel boats anywhere, and typhoon season can compress plans in the south.
May - June and October - November (most regions), plus January - March (Hokkaido drift ice)
Conditions vary sharply by region. Southern islands can have strong Kuroshio-influenced currents and channel drift dives; temperate coasts may bring surge and reduced visibility after weather. In the far north, cold water and ice require drysuit training, conservative gas planning, and strong surface protocols. Across Japan, boat traffic is common at popular sites: carry an SMB and follow local procedures for ascents.
Ito Diving Service BOMMIE in Tateyama operates a guided boat-only shark spectacle. Katsuura Diving Service runs introductory, shore and boat programs from Ubara, while Namegawa Diving Service coordinates another local fishing-ground dive system.
Book a local boat or introductory dive, not a fictional all-archipelago circuit. Fukue-based Marine Support Goto-Kaiyu lists introductory dives throughout the year, while Goto Diving Lagoon lists summer boat try-dives.
Regulus Diving, Hisaichi Divers Club, Sea Dive and Arabesque are among the locally listed providers offering access to island waters. Yaene and Sokodo/Sanmata present relatively approachable guided shore routes, while exposed Nazumado can deliver strong current, dense fish life and sometimes pelagic visitors.
Two real but separate dive bases. Ishigaki supports accessible certified fun dives and beginner introductions through shops such as Viking Scuba Kabira, with Manta Scramble and Osaki Hanagoi Reef as signature names.
Akinohama, Nodahama, O-no-hama, Keikai and Toshiki span ladder-assisted reef entries, arches, lava walls, current and seasonal pelagic dives. The local diving council regulates shore routes and gear.
Build your scuba trip around a specific coast and entry type. Izu Oceanic Park and Futo anchor the east; Osezaki and Koganezaki offer managed western shore options; Kumomi adds boat-accessed rock formations; Mikomoto is a specialist southern drift outing.
Kashiwajima is a compact, boat-based macro-photography destination. JNTO highlights Ushironohama and unusually varied temperate and tropical reef life.
Kushimoto is a land-based Pacific-coast dive destination built around short shore and day-boat outings. Its Kuroshio-influenced reefs support table corals, reef fish, small crustaceans, nudibranchs and seasonal schools.
Book guided freshwater diving through a provider that accepts your certification, cold-water experience and briefing language. OCEAN DAYS has a Shikotsuko Onsen base, corroborated by Chitose City.
Choose a base for the diving you want: Jogashima for shore sessions, Miyagawa Bay for short boat trips, Hayama for rocky reefs and macro photography, or Odawara for separately reached shore facilities. Miura Umi-no-Gakko and NANA publish guided programs for certified divers.
Scuba is a Miyakejima activity, with locally operated shore, boat and some night dives. The Miyakejima Tourism Association lists Ocean Club No.3, Santomo, Snapper, Tokyo Diving Center and other island services.