The warm climate, high-quality seawater, colorful corals, all kinds of tropical fish and other marine benthos make Sanya the best place for diving in Hainan. There are two options for diving sightseeing: boat diving and direct diving.

Diving boats include sightseeing submarines: Hanglv No.1 sightseeing submarine located in Dadonghai, Sanya allows visitors to see underwater scenery through closed-circuit television. The whole underwater journey takes about 50 minutes.

Semi-submersible: Located in Yalong Bay, Sanya. It can dive 1.7 meters, and visitors can see underwater corals and tropical fish groups through the glass fiber reinforced plastic window next to the seat. The whole underwater sightseeing trip is about 1 hour.

Direct diving can snorkel: each guest is equipped with a set of diving goggles, breathing tubes, flippers and life jackets. After the snorkeling guide explained the relevant knowledge and precautions, he went sightseeing with the snorkeling guide. The main activity is in the shallow water area of 13 meters.

Scuba diving: tourists wear special diving suits and diving equipment and are trained by coaches for about half an hour. They carried compressed air bottles and dived under the guidance of diving instructors. The dive depth is 415m.

Night diving: Different from diving during the day, it is a flashlight with sound, and underwater diving at night is more mysterious and exciting.

Walking on the bottom of the sea: wear a hood to supply gas, accompany the tourist car along the cruise ship to the water ladder on the bottom of the sea, and reach the submarine coral with a depth of 45 meters. The whole journey takes about 2030 minutes.

Underwater camera: Professional camera divers use special underwater camera equipment to provide shooting services for tourists underwater.