Koh Tao is surrounded by dense fringing coral reefs and submerged granite pinnacles, with some of the highest coral coverage and biodiversity in the Gulf of Thailand. Our island is one of Asia’s most popular island destinations for snorkeling and we certify more SCUBA divers every year than any other location worldwide. The maintain sustainability, the health of our coral reefs is monitored regularly by the Department of Marine and Coastal Resources (DMCR) and the local dive community.