Sunny Bay is located in the southwest part of the Yalong Bay National Tourism Resort District, about 19 kilometers from the Sanya city center.
The bay is U-shaped and stretches about 2 kilometers long. The average annual water temperature is 26.4 degrees Celsius.
Sunny Bay is one of the best spots for diving and snorkeling in China for its transparent water, high visibility and amazing coral reefs at the bottoms of the sea. During the period from April to June, divers are able to see spectacular fish migrations.