Wildlife boats leave from Futami Port on Chichijima for dolphin swimming, whale watching, snorkelling, and offshore nature tours. Humpback whales are the main winter and spring draw, while sperm whales and several dolphin species are possible in the surrounding deep water.
Choose operators that keep a respectful distance and explain their rules before entering the water. Ogasawara's marine life is the reason to come this far, and the best trips feel less like a chase and more like time spent in a rich ocean.