Koh Rok you can snorkel over some of the most diverse coral reefs in the world combining marine life and all the colours of the rainbow also included is Koh Haa Island is considered to be one of the best snorkelling sites and your snorkelling efforts will be rewarded with an amazing and most beautiful coral reef. Clearly visible through the crystal clear waters you should find Clownfish and other colourful species that will keep you entertained for hours