Widely considered one of Thailand's premier dive site, Chumphon Pinnacle is also one of the islands most challenging, with occasionally strong currents. Ranging from depths of 12m to 36m, the site is a group of massive rocks arranged in a rough oval and running north to south. Visibility is superb in season, and the site plays host to a wide variety of pelagic as well as reef fish. Great barracuda, king mackerel, grouper, and tuna throng to Chumphon year round, and in season whale shark sightings are common. As the site is a fair distance offshore, visitors from the open ocean are unpredictable and sailfish, oceanic white tip sharks and bull sharks have been spotted.