Step on board a longboat to see four Thai islands on this full-day guided tour. First stop is Koh Chuek, where you'll have a snorkelling session at a group of coral reefs. Then, you'll head over to Koh Mook, where there's a short swim to the Emerald Cave, a hidden lagoon on the west coast of the island. Next, you'll tuck in to a buffet lunch on the beach at Koh Ngai, before dropping anchor for more snorkelling with the schools of fish at Kohn Waen.
Take a scenic longtail boat ride around four islands. Snorkel among the colourful corals. Swim to the Emerald Cave on Koh Mook