Sanbondake is about an hour’s boat ride from Miyakejima and is officially called Onohara Island. It is an uninhabited reef floating off the coast of Miyakejima. This site is for advanced divers only due to the strong current. This dive is a complete drift style dive. It is only possible to dive when sea conditions and currents are right. It is the most dynamic point in Miyakejima, where large schools of fish and large migratory fish can be seen.

More than 200 wild dolphins live around Mikurajima. You can swim with them by skin diving only; no scuba diving is allowed. There are two ways to swim with the dolphins here. The first way is you can land on Mikurajima and approach the dolphins in a small boat.

Senzu is located 36 km southwest of Jinzu Island in the Izu Seven Islands and consists of three reefs. It takes one and a half hours one way from Jinzu Island, three and a half to four hours one way from Shimoda, and five hours from Nishi-Izu, and can only be reached by charter boat.

This dive site, situated at the southernmost tip of Mikomoto Island, is renowned as the prime location for encountering hammerhead sharks and white-tip reef sharks. It stands out as the foremost spot for such encounters.

During early summer, hammerhead sharks gather in large schools at this location, circling repeatedly in a captivating manner. Divers can enjoy extended observation periods as the sharks navigate around roots or rest on rocks.

There are a number of diving spots around Kamikimoto Island, an uninhabited island off the coast of Shimoda. It is a 20-minute boat ride from the harbor to the dive site. It is a popular spot for hammerhead sharks to appear from summer to autumn when the Kuroshio Current approaches the Izu Peninsula.

This is the “standard“ dive site on Mikomoto Island. There is a large root called “Kadone“ in the west direction, and the basic diving style is to wait for the root and then surface on the spot. Average depth: around 20m

Situated offshore Enokuchi and Mitsu-ne on Kamikomoto Island, this site is highly affected by tides. The depth of the reef ranges from 22 to 25 meters, peaking at 19 meters towards the end before descending sharply to 45 meters. Due to significant tidal influence, it’s considered a challenging dive, particularly for beginners.

The point, situated on the north side of Mikomoto Island, experiences the influence of both low and high tides. Notably, the three roots exhibit symmetry, with the west side being flat and gradually deep, while the east side features clustered roots.

This is the largest and closest of the seven Izu Islands to the mainland. Mihara, an active volcano, is located in the center of the island. Boat diving is also available, but due to the variety of beach points, diving from the beach is more popular. The most popular of these is Autumn Beach.