You can rent or borrow snorkelling gear at several guesthouses should you wish to go check out the underwater action.
Robinson's Bungalows provide free kit, while Lazy Beach rent out at $2 a time. Some of the best places to snorkel are the rocks at either side of Lazy Beach, M'Pai Bei's Long Beach and around Koh Gon.
The Beach organises trips to Koh Gon and the dive centres are all able to arrange snorkelling tours.
By Caroline Major
Last updated on 4th December, 2014.