Welcome to Mar Scuba

Photo of hammerhead at Mikomoto (Shimoda, Japan)
by Stephanie Stroup, July 2008

Mar Scuba is the oldest running foreigner owned full service dive operation in the Tokyo area. We provide PADI scuba instruction, dive tours and dive equipment to residents of Tokyo and the surrounding areas. Courses and tours are primarily in English (native language) but can also be offered in Japanese.

Mar Scuba News & Upcoming Events

Please check our calendar for the latest planned dives and courses. To see photos from recent dive seasons and meet our divers, please visit and join our Facebook group.

Dive season is getting ready to start! Our first open water courses and fun dives will begin mid-May. If you have a request to go diving, please drop us an email and let us know.

The new calendar is in the process of being posted. Please view our calendar page or join our Facebook group for advance notice of events. You may also want to join our newsletter for news, reviews, and updates on our latest happenings. Links in left side bar.

Been awhile since you went diving? Want to brush up your skills? Scuba refresher courses can be done in Tokyo or the ocean year-round Course details can be found here.

Dive with Mar Scuba

We specialize in scuba diving tours to the Izu Penninsula, as well as destinations across Japan and worldwide. Dive sites are chosen to meet the needs of the divers in each group, and we offer personalized training for those who are looking to expand their scuba skills.

English speaking dive guides provide individualized, personal service in a non-competitive and relaxed atmosphere. Our schedules are flexible, so if you want to dive and don't see your date or site on the site, please contact us to make a request! For safety and service, we usually allow no more than 6 divers per dive guide.

Diving near Tokyo MORE >

The best diving near Tokyo and surrounding areas (Kanagawa, Saitama) is on the Izu Penninsula, about 100 kilometers away from Tokyo. The most popular dive site with easy access is Atami, a 45 minute bullet train ride from Tokyo station. On the west side of Izu, Osezaki has dependable conditions even with approaching typhoons. Furthest south on the peninsula, Mikomoto offers diving for qualified advanced expert divers. In Izu, we visit a variety dive sites for every skill level.

Diving in Japan

There is a diversity of scuba diving around the country. In the south, Okinawa and the Ryukyus are best known for their tropical waters, diverse coral and marine life, and beach resort atmosphere. On the Sea of Japan, dive destinations such as Sado Island can supply the diver with a close up view of sheephead and other fish that are not common in other parts of the world. Up north in Hokkaido during winter, ice diving provides a glimpse into a completely different environment.

Diving around the World MORE >

We also have dive tours to destinations around the world. For example, just a few hour plane ride away from Japan, in Micronesia, Guam, Saipan, and Rota offer some of the best diving in the world.