I went to practice a diving in Shishihama in Numadu! I think many people think that it's still early to jump into the sea but it's not totally cold because you need to wear a dry suit upon your cloth! I've heard that the level of transparency is changable depending on the weather but i could enjoy a beautiful ocean because it was a beautiful weather.
PRICE: open water diver course: 76000yen
Yanagi building C101, Yayoi-cho2-31-14, Nakano-ku, Tokyo