Welcome to Mar Scuba
Hammerhead seen at Mikomoto, off the coast of Shimoda, Japan

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

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 fellow divers, please visit and join our Facebook group.

The diving "season" runs from about March to December, but we dive year round. If you have a request to go diving, please drop us an email and let us know.

Please view our calendar page or join our mailing list or see our Facebook page 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 have 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 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.

For those who want to be spoiled and dive as much as possible, we offer trips on the Aggressor Fleet and Mike Ball liveaboards. The diver will feel like royalty with the VIP pampering and service.


We hope that you can join us in the ocean soon!