Ogasawara Islands: The Ferry, Dolphins, Whales and Island Life
May 4, 2026 · ✍️ olablog · ⏱ 6 min read
Planning Ogasawara: the 24-hour ferry from Tokyo, the six-day trip rhythm, swimming with dolphins, whale seasons, Minamijima and practical tips for Chichijima.
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Officially, the Ogasawara Islands are part of Tokyo. In practice they are about 1,000 km south of the city, out in the open Pacific, and the only way to reach them is a ship that takes about a day to get there. Because the islands were never joined to a continent, plants, snails and birds evolved there in isolation, and many species exist nowhere else. That is why the islands were listed as a UNESCO World Natural Heritage Site in 2011, and why they are often called the "Galapagos of the Orient".
Most visitors stay on Chichijima, the main island, which has the port, the village, the guesthouses and the tour boats. Smaller, quieter Hahajima lies to the south. What brings most people here, though, is the sea: resident dolphins, seasonal whales and water so clear it looks empty until something swims past.
The voyage: how a trip works
There is no airport. The Ogasawara Maru ferry leaves from Takeshiba Pier in central Tokyo and takes about 24 hours to reach Futami Port on Chichijima. It sails roughly once a week, then waits in port for a few days before heading back. The result is a fixed rhythm: a standard trip lasts about six days, with one day at sea each way and three nights on the island. You cannot pop over for a weekend, and missing the return sailing means waiting for the next one.
On board, you can choose anything from shared berths to private cabins. The crossing can be rough, especially in winter, so pack seasickness tablets even if you think you won't need them. Your phone loses signal for much of the journey. Most people find that a relief: you watch for seabirds, sleep, read and slowly shift to island time.
To reach Hahajima, change at Chichijima to the smaller Hahajima Maru, a trip of about two hours.
Dolphins
Two species can be seen around the islands throughout the year: Indo-Pacific bottlenose dolphins and spinner dolphins. Half-day and full-day boat tours leave Futami Port most days, and on many of them you can slip into the water with a mask and snorkel when a pod stays close. Good operators let the animals choose to approach and never chase or corner them. You will get more out of it if you are comfortable in deep open water, since there is no bottom to stand on.
Whales
Humpback whales arrive in winter to breed and raise calves, and they stay until spring, roughly from December to May, with the best sightings usually in the late-winter and early-spring months. You often don't even need a boat: from the Weather Station observatory above the village, you can watch them blow and breach offshore.
Sperm whales feed in deep water well beyond the islands, so seeing them means a longer boat trip. Your chances are best in the calmer seas of summer and autumn. Whale tours follow local guidelines on approach distance and speed.
On and around Chichijima
- Minamijima. A small uninhabited island off Chichijima's southwest coast, with a white-sand cove called Ogiike ringed by limestone cliffs. It is strictly protected: you may only visit with a licensed guide, visitor numbers are capped, and the island closes for part of each year so the vegetation can recover. Many dolphin tours stop here.
- Miyanohama. A beach north of the village where coral starts close to shore, good for snorkeling on your own on calm days. Stay near the beach, as currents run strongly further out.
- Kopepe Beach and Sakaiura. Two easy-to-reach bays on the west coast. Sakaiura has a wartime shipwreck lying in the shallows, and you can snorkel around it.
- Weather Station observatory. The island's favourite sunset spot, and a good place to watch for whales in winter.
The islands' history is unusual for Japan as well. The first permanent settlers, who arrived in 1830, were a small group of Westerners and Pacific Islanders. After the Second World War the islands were under US administration until 1968. Wartime remains, such as gun emplacements and caves, are scattered through the hills, and local guides run history walks.
When to go
The islands are subtropical, so it is warm enough to swim for much of the year. For humpback whales, go from winter into spring. For calm seas, snorkeling and the best dolphin swims, go in summer. Typhoons are possible from about July to October and can delay the ship, which is why you should never book a tight connection on the day you return to Tokyo. Japanese holiday periods such as Golden Week, the summer holidays and New Year sell out early, both on the ship and in guesthouses.
Practical tips
- Book lodging first, then the ship. Guesthouses are limited, and every guest arrives on the same sailing.
- Book tours ahead for dolphin swims, Minamijima and night tours, especially in peak periods.
- Bring cash. There are only a few ATMs, and some small businesses do not take cards.
- Clean your shoes and gear. Before you walk into the forest, scrub off seeds and soil at the cleaning mats provided. Stray seeds from the mainland are a real threat to the islands' native plants. Never take plants or animals off the islands.
- Travel insured. There is only a small clinic on the island, and a serious emergency means a long evacuation to the mainland.
Plan your trip
Build your trip around the ferry timetable, not the other way round. Pick a sailing, secure a room, then fill your three island days: a dolphin and Minamijima boat tour on the first, snorkeling at Miyanohama or Sakaiura on the second, and a whale-watching trip or a history walk on the third. Keep the last morning free. When the Ogasawara Maru pulls out of Futami Bay, islanders gather on the pier to wave it off, and small boats escort it out to sea. It is a farewell that stays with you long after the island drops below the horizon.
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