Koh Phangan is full of outdoor adventure and most of it can be done on a few Baht. Rich coral reefs run along the north-west coast of the island, supporting a vibrant underwater world making it an excellent place to snorkel and one of the cheapest and least-crowded places to dive in Thailand. There are fishing trips, around the island boat trips and loads of watersports on offer including kayaks, catamarans and fishing.