Current Regions Served
Japan
Japan
From the icy seas of Hokkaido to the coral reefs of Okinawa, Japan offers one of the most diverse underwater environments on Earth. Volcanic formations, kelp forests, and colorful reefs create a landscape where ancient tradition meets modern exploration. Each region reveals a different story—historic wrecks, submerged torii gates, and thriving marine ecosystems that showcase the harmony between people and the sea.
The SDI / TDI / ERDI Japan Office proudly supports divers and professionals across the country. Our mission is to make world-class scuba education accessible in Japan, providing certification services, localized training materials, and dedicated customer support in Japanese. Whether you are taking your first breath underwater or pursuing advanced technical training, our team is here to guide and assist you every step of the way.
For assistance, please contact us by phone during business hours or email us at your convenience. We are committed to offering sincere, reliable service to every member of Japan’s diving community.







