Waterman Tours. If burly diving instructor Tokuoka-san's beach-bum appearance doesn't immediately inspire confidence, his experienced, skilled instructional manner will win you over in no time. More than two decades of teaching diving courses in the United States, Mexico, New Caledonia, and here on Iriomote give him a sensitivity to people's different learning styles when approaching diving for the first time. His guidance will put you at ease, and his courses through reefs and rocks will thrill you. Snorkelling and stand-up paddle boarding tours are also available. 538–1 Uehara, Taketomi-cho, Iriomote, Okinawa, 907-1541. 0980/85–6005.