The island of Phu Quoc is an excellent place for snorkeling and scuba diving. Diving sites are shallow, ranging between 10 to 12 meters deep. While the island's northern part is sheltered, the south offers many more diving sites. However, the south is more prone to sudden changes in conditions, and divers must be wary. The diving season in Phu Quoc lasts from October to May, with October to April being the best period. Many diving sites offer PADI-certified training to novices as well.
The warm, shallow waters are clear and calm, with rich and varied coral life on the seabed, and diving is the best way to explore life underwater around the island. Divers could encounter colorful reef fish, nudibranchs, moray eels, stingrays, pufferfish, cuttlefish, and octopus underwater.