Overall, dive sites in the Gulf of Thailand feature a mix of coral reefs, rocky pinnacles, and wrecks that support diverse marine life including barracuda, groupers, reef sharks, turtles, and occasionally whale sharks. With warm water temperatures year-round and relatively gentle conditions, the region has become a major hub for recreational scuba diving and marine tourism in Thailand and across Southeast Asia.
In addition to its biodiversity, the Gulf of Thailand is valued for its relatively shallow dive sites and good visibility during the main diving season, making it suitable for training dives, underwater photography, and marine research. Many reefs host colorful hard and soft corals, sea anemones, sponges, and macro marine species such as nudi-branchs, shrimp, and seahorses. Large schools of trevally, fusiliers, and barracuda are commonly observed around offshore pinnacles, creating dynamic underwater scenes for divers.