Japan Ogasawara Islands Guide for Residents
The Ogasawara Islands (小笠原諸島) — also known as the Bonin Islands — are Japan’s most remote inhabited island group, lying 1,000 km south of Tokyo in the Pacific Ocean. Designated a UNESCO World Heritage Site in 2011 for their extraordinary endemic biodiversity, the Ogasawara Islands are among Japan’s most exceptional natural destinations — and among the most deliberately difficult to reach.
The 25-Hour Journey
Access to Ogasawara is exclusively by the Ogasawara Maru ferry — a purpose-built vessel operated by Ogasawara Kaiun — departing from Takeshiba Pier (竹芝桟橋) in Tokyo’s waterfront and arriving at Chichijima’s Futami Port after approximately 24–25 hours at sea. There is no airport on the islands. This inaccessibility is deliberate: the UNESCO designation explicitly prevents airport construction, and the restriction on continuous movement of biological material protects the island ecosystem.
The ferry schedule is typically 6–7 days on Chichijima (or a day trip to Hahajima) then 25 hours back — the minimum visit is about 8 days. Sailings occur approximately every 6 days year-round (schedule varies; check Ogasawara Kaiun’s website). Book months in advance for July–August and Golden Week. Accommodation: the island has hotels, guesthouses (民宿), and ryokan; most include meals. The village of Okimura on Chichijima has restaurants, shops, and dive operators.
Why Ogasawara Is UNESCO World Heritage
The Ogasawara Islands were never connected to a continent — they are oceanic islands that arose from submarine volcanoes. Like the Galapagos, species arrived only by sea or air, evolving in isolation over millions of years. The result: extraordinary endemism. Approximately 195 plant species found nowhere else on Earth, 14 endemic land bird species including the Bonin Honeyeater (メグロ), and a marine environment with humpback whales, spinner dolphins, green sea turtles, and rare Ogasawara star coral formations.
To protect this ecosystem, all visitors must undergo a strict biosecurity check before landing — removing and inspecting footwear, checking bags for seeds or soil. The island village is charming — genuinely inhabited by a small community (~2,500 people) with a distinctive culture blending Japanese, American, and Pacific Islander heritage from 19th-century settlers.
What to Do on Chichijima
- Whale watching (ホエールウォッチング) — January to April; humpback whales, sperm whales, and various dolphin species
- Dolphin swimming (イルカスイム) — year-round; wild spinner dolphins frequent the bay; snorkeling with them is one of Japan’s most magical wildlife experiences
- Diving — exceptional coral, sea turtles, manta rays, and the occasional hammerhead; visibility consistently excellent
- Sea turtle nesting and hatching — June–November; night beach walks with guides to observe nesting and hatching green sea turtles
- Hiking — trails to Mt. Chibusayama viewpoint, coastal clifftop walks; the endemic forest is immediately accessible from the village
Hahajima (母島)
Hahajima — the second inhabited island, 2 hours by small ferry from Chichijima — is quieter, less developed, and more ecologically pristine than Chichijima. The endemic Hahajima Honeyeater (ハハジマメグロ) is found only on Hahajima. Day trips from Chichijima are possible; overnight stays allow deeper exploration. The island has fewer than 500 permanent residents.