DivingShop BlueBase

Diving service near Mt.FujiThe Mouth of Truth is a sunken place, night diving can be held every day. (Reservations must be made at least 2 days in advance.) There is a diving pool (seawater), 6L-14L tanks are always available, Nitrox, left and right valve tanks for the side, and W tanks are available.

Hirasawa in Numazu, Shizuoka offers calm seas year-round, ideal for both beginners and experienced divers. With multiple entry points, diverse terrain—sandy bottoms, rocky reefs, and coral colonies—it’s great for macro and wide-angle photography, plus vibrant marine life.

Osezaki is one of the most famous dives sites in Japan. It is a cape that juts out into Suruga Bay and done as a beach dive. There are two dive options, one on the bayside of the cape and the other on the open seaside, both of which are shallow rocky areas when you descend and sandy areas when you go offshore.

Ida in Numazu City, Shizuoka, is a top beach dive site in Nishi Izu, famed for its clear “Ida Blue“ waters. Its gentle rocky slope suits all levels, with rich marine life and good tidal flow. Ideal for both macro and wide-angle photography, it’s a favorite among divers year-round.

Kosoga Cave in Atami, Shizuoka, is open Nov–Apr and features a 40m semi-enclosed cave at 6–12m depth, ideal for beginners. Its wide space and open ceiling let sunlight create a stunning blue gradation. Just 10 minutes by boat from Atami Port, it’s both scenic and accessible.

Doi in Izu City, Shizuoka, is a top West Izu dive spot with calm beaches and diverse boat sites. It offers year-round night and wreck diving, soft coral colonies, and rich marine life, making it ideal for both beginners and advanced divers seeking variety and adventure.