Ogasawara Islands

Written by DiveJourney. Built from public sources and local operator knowledge. Last updated Nov 3, 2026.

• Ogasawara Kaiun: Ogasawara Maru sailing schedule and fares - Official Tokyo-Chichijima sailings and month-specific one-way fares; November 2026 economy fare JPY 30,030.
• Ogasawara Kaiun: Hahajima Maru schedule and fares - Two-hour Chichijima-Hahajima service, timetable, no advance reservations; November 2026 standard adult fare JPY 5,250.
• Ogasawara Kaiun: Takeshiba boarding area - Takeshiba check-in and mainland ferry terminal instructions, including Hamamatsucho and Takeshiba stations.
• Ogasawara Village: Tourism and guide restrictions - Two inhabited visitor islands; marine activities; guide-only access to Minamijima and Hahajima Sekimon.
• Ogasawara Village Tourism Association: FAQ - Practical route, local transport, shops, telephone and ATM, wildlife season and weather disruptions.
• Hahajima Tourism Association: Visitor FAQ - Hahajima seasonal water comfort, typhoon risk, lack of pharmacies, cellular coverage and ATM.
• Hahajima Tourism Association: Transport - Interisland tickets, check-in advice, limited amenities and local travel planning.
• Ogasawara Village Tourism Association: Scuba operators - Named current Chichijima dive suppliers and published sample day-boat and introductory dive rates.
• JNTO: Tokyo diving guide, Ogasawara - Chichijima and Hahajima dive styles; named Dobuiso, Takaiwa, Maguro Ana, Yonhon Iwa; remote Keta conditional.
• Seasonal Dive Guiding: Dive seasons - Local operator month-specific winds, water conditions, seasonal fish, visibility, and conditional Keta trips.
• Seasonal Dive Guiding: Tour menu - Current Chichijima local day trips, check dives and June-August Keta expedition policy.
• Seasonal Dive Guiding: 2026 prices - Operator rates effective April 2026; planned 2027 rate adjustment.
• Dive Resort Hahajima: Dive menu - Live Hahajima operator with drift-focused fun dives and separate supervised introductory shore dives.
• Dive Resort Hahajima: Local dive point map - Operator-specified Hahajima reef, wreck, current and depth characteristics; nearby outlying islets are operator-led.
• Dive Resort Hahajima: Seasonal itineraries - Operator-specific Mar-Jun tuna, summer and autumn rays/visibility descriptions.
• Dive Resort Hahajima: Booking conditions - Skill-history and limited-date restrictions for Hahajima dive bookings.
• National Land: Snorkel and skin-diving tours - Named Chichijima snorkeling and skin-diving services; not evidence of formal freediving schools.
• Masuo Chichijima guide: Skin-diving lessons - Current direct local guide advertises coached skin-diving and beginner snorkeling.
• Ogasawara Village Tourism Association: Snorkel guides - Current guided snorkeling services and rental examples on Chichijima.
• Japan Ministry of Environment: Ogasawara National Park spots - Official Chichijima and Hahajima snorkeling, shore-current cautions, hikes and park sites.
• JNTO National Parks: Explore Ogasawara - Hahajima trails, Minamizaki, heritage and wildlife activities.
• Ogasawara Village: World Heritage visitor rules - Biosafety, designated trails, Minamijima and Sekimon accredited-guide requirements.
• Ogasawara Village Tourism Association: Ecotourism code - No camping, no collecting or feeding wildlife, no coral damage and invasive-species prevention.
• Ogasawara Village Tourism Association: Minamijima landing rules - Accredited guide, restricted walking routes, no pier, shoe washing and weather-dependent landing.
• Ogasawara Village Government: June 2023 Minamijima rules change - Primary correction to outdated pages: the fixed two-hour/daily 100-person limits and blanket seasonal closure were removed June 1, 2023.
• Tokyo Metropolitan Government: Ogasawara ecotourism regulations - Primary current Minamijima and Hahajima Sekimon rules, Sekimon group limits and cave closure.
• Hahajima Tourism Association: Guided land tours - Current named Hahajima trekking guide choices; some guided-only routes, English availability limited.
• Ogasawara Ecotourism Council: Dolphin-swim code - Four-boat maximum per dolphin group and no more than five water entries per group per boat, subject to animal behavior.
• Ogasawara Whale Watching Association: Approach rules - Voluntary vessel approach limits for humpback and sperm whales; not permission for whale swimming.
• Ogasawara Ecotourism Council: Whale-watching seasons - Humpback watching roughly Dec-May with stronger Feb-Mar odds; sperm and dolphin activities in other months.
• Ogasawara Ecotourism Council: Green turtle etiquette - Nesting observation protocols: avoid light, approaching turtles and disrupting nesting.
• Ogasawara Tourism Association: Longstay seasonal advice - Summer/fall swimming, turtle nesting through August, quieter winter, and packing.
• World Natural Heritage in Japan: Ogasawara through the year - Government-supported overview of seasonal diving visibility, autumn and biodiversity.
• JMA: Chichijima monthly climate normals - Japanese meteorological agency month-by-month Chichijima temperature and rainfall; weather context, not operational marine forecast.
• Ogasawara Village: Chichijima clinic - Clinic location, phone, services and explicit lack of hyperbaric oxygen treatment.
• Ogasawara Village: Hahajima clinic - Clinic location, phone, emergency access, and explicit lack of hyperbaric treatment.
• Ogasawara Village: Severe case evacuation - Mainland medical evacuation by Self-Defense Forces assistance for cases clinics cannot treat.
• Japan Coast Guard: 118 marine emergency - Japan Coast Guard verified marine distress/accident hotline 118.
• Japan Ministry of Foreign Affairs: Visa guidance - Nationality-specific entry and tourist visa requirements for Japan.
• JNTO: Electricity in Japan - 100V AC and 50Hz in eastern Japan; Tokyo islands use Japanese outlets.
• Destination hero photo by Shino Nakamura - Unsplash License. Photographer profile: https://unsplash.com/@shinonk | Location: Hahajima Island, Ogasawara, Tokyo, Japan