The blue waters of Wuzhizhou Island in Sanya

Wuzhizhou Island is located in Haitang Bay, north of Sanya, Hainan Province, China. It is a national 5A-level scenic spot.  Geographical environment - Landform: The island is irregularly butterfly-shaped, with a "downward" terrain. The central mountain is layered, the east and south are mostly cliffs, and the north and west are flat, with fine sandy beaches along the coast. - Climate: It has a tropical marine climate, with long sunshine hours, high average temperatures, small annual temperature differences, and no distinct seasons. - Hydrology: There are no rivers or reservoirs on the island, which is surrounded by the sea. The surrounding waters are clear, with a visibility of 6–27 meters, and the average annual surface water temperature is 22–28°C.