Gili Trawangan has more than a dozen named dive sites around the island, ranging from gentle slopes good for new divers to stronger-current walls that suit the experienced. Turtle Point on the east coast is the most popular — green and hawksbill turtles are seen on nearly every dive. The Manta Point site off the south coast occasionally sees manta rays between June and October, when upwellings bring nutrient-rich water into the area.
The dive industry on Trawangan is well-established and mostly reputable. PADI open-water courses are widely available and reasonably priced. Night dives are popular — the reef takes on a different character after dark, with sleeping turtles, hunting lionfish, and octopus emerging from the coral.