- Bonegi II (Kinugawa Maru): The best known of the pair. Parts of the wreck stick out of the water, so snorkelers can see the wreck’s upper structure while divers follow it down along the slope. Corals and sponges cover the plates, and schooling fish gather in the shade of the hull.
- Bonegi I (Hirokawa Maru): A deeper, larger wreck, with the bow in the shallows and the stern at about 55 meters. It suits certified divers who want more structure to explore, with the best light in the morning.
- The shore entry: You wade in from the black volcanic beach and swim out to the wreck. It keeps logistics simple and lets you dive without a boat, though footing on the stones needs care.
- Snorkeling over the hull: The shallow upper sections of Bonegi II are close enough to the surface for a mask and snorkel to
- Bonegi II (Kinugawa Maru): The best known of the pair. Parts of the wreck stick out of the water, so snorkelers can see the wreck’s upper structure while divers follow it down along the slope. Corals and sponges cover the plates, and schooling fish gather in the shade of the hull.
- Bonegi I (Hirokawa Maru): A deeper, larger wreck, with the bow in the shallows and the stern at about 55 meters. It suits certified divers who want more structure to explore, with the best light in the morning.
- The shore entry: You wade in from the black volcanic beach and swim out to the wreck. It keeps logistics simple and lets you dive without a boat, though footing on the stones needs care.
- Snorkeling over the hull: The shallow upper sections of Bonegi II are close enough to the surface for a mask and snorkel to show the rusted frame and the reef life that has grown on it.
- Coral growth on the wrecks: Soft and hard corals have taken over the steel, and small reef fish, including anemonefish, move through the gaps. Bring a torch for the shadowed corners.
- Wartime remains: Look for the hull plating, openings and ribs that show how the freighter was built. Keep your hands off the structure to protect both the wreck and the coral.
- The black-sand beach: A dark volcanic shoreline with gravel that gets hot by midday. It is a good place to rest between dives and watch the swell roll over the wreck.
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Hi, I’m Johan (Netherlands 🇳🇱), the creator of TakeYourBackpack. Over the past 3 decades, I’ve backpacked through 90+ countries across six continents, gaining extensive experience with independent travel, long-term trips, and overland routes.