There are a number of things different about the style and diving manner in Japan. This is a basic guide covering some of the main differences and topics you'll find...
The English guide to diving in Japan
Dive in Japan is the comprehensive guide in English for diving in Japan, featuring detailed information on diving shops and destinations as well as unique insights into the Japanese diving scene. Operated by the Non Profit Organization "Japan Diving Experience" to promote overseas divers to visit Japan, Dive in Japan provides support and assistance with a dedicated DiveMaster available to arrange your Japanese diving experience.