Snorkelling Trip 5 Island Tour Around Koh Tao and Koh Nang yuan

Shark Bay on Koh Tao’s south coast is where most snorkelling tours see green turtles and blacktip reef sharks in the same swim, and this seven-hour trip builds the day around it. Five sites in total around Koh Tao and Koh Nang Yuan, with a modified fishing vessel, Thai lunch with vegetarian options, and hotel transfers from Sangthong Tours.

The morning starts with a safety briefing at Sangthong Tours on Koh Tao before boarding. Nang Yuan island (the three-island sandbar) gets the first stop with reef-edge snorkelling in the shallows. Mango Bay on Koh Tao’s northwest corner follows, known for its deep visibility and coral cover. Hin Wong Bay on the east coast gives calmer water and healthier reef than the tourist side, and Aow Leuk on the south has patches of soft coral. Shark Bay is the finale, where slow-moving green turtles graze alongside small reef sharks in relatively shallow water. Snorkelling gear, life jackets, pineapple cookies, fresh fruit and water are included, plus an onboard restroom and underwater photography.

Suits all ages and swimming abilities; life jackets are included for less confident swimmers. Bring reef-safe sunscreen, a rash vest and cash for the Koh Nang Yuan private-island entrance fee (250 THB adult, 120 THB child, not included). Sea conditions roughen in the afternoon, particularly October to December. A strong option at $30 given what’s included. Pineapple cookies and fresh fruit sound like a gimmick but actually keep energy up between stops. Underwater photography is included (you get the files, not a hard-sell print package). An onboard restroom matters on a seven-hour trip and this boat has one. The 4.8 rating across 96 reviews suggests delivery is consistent.