Thanks to the pristine coral reefs that surround practically all the islands, scuba diving is the number one sports activity. Ishigaki is known for its manta rays, while Yonaguni's star attractions are hammerhead sharks and underwater ruins.
Even with just a snorkel and mask, it's possible to see a good assortment of tropical fish and other marine life among the reefs just a short distance from the beaches. The best spots are probably Nakamoto Beach on Kuro Island and Star Sand Beach on Iriomote.
