There are many diving spots near the Chichijima, Hahajima, and Mukojima Islands. In summer and fall in the Maguro Ana area of Yomejima, you may find yourself surrounded by a school of dogtooth tuna. In the Shihon-iwa Rock area of Hahajime, you can see the migration of large schools of these magnificent fish. Divers will want to experience the Blue Ribbon area of ImotoJima, which is popular for its beautiful coral reef, and Nishibana in Mukojima, where large migratory fish can be seen. Divers may also be lucky enough to encounter mantas and green turtles unique to Ogasawara.

For amateur fisherman, fishing spotted knifejaws from the rocky shore and large greater amberjacks from a boat is dreams come true. Other fish swimming in the oceans of Ogasawara include striped jacks, yellow-edged lyretails, lavender jobfishes, and black jacks.
Fishing rods are available for beginners, for the leisurely fishing of big-eye scads and striped jacks from the breakwater.

The Ogasawara Islands have never been a part of any continent. Plants and animals carried by ocean currents, winds and birds have evolved in unique ways here. A day spent trekking and hiking in the semitropical ddene fern forests and wild mountains while enjoying the unique animals, birds and plants will be filled with surprises and excitement.