Advice on Diving inJapan

... nation are off Izu. Diving near Tokyo almost requires a wetsuit or even a dry suit, depending on the season. The resorts and dive shops are abundant near the busy metropolitan areas of the home islands. There are also hot springs and amazing aquariums and museums to explore. Ryukyu Islands, Okinawa & Yonaguni There are 47 prefectures or provinces in Japan, the southernmost prefecture is called Okinawa, and collectively the islands are known as the Ryukyu Islands. This most southern realm of Japan is literally another world from the busy cities of the mainland. The island of Okinawa itself i...