The marine ranch in the sea area of Wuzhizhou Island in Sanya, Hainan Province, is China's first tropical marine ranch.

Photo taken on April 29, 2020 shows corals at a marine ranch in the sea area of Wuzhizhou Island in Sanya, south China's Hainan Province. (Xinhua/Yang Guanyu)

In recent years, the marine ranch has successively carried out artificial reef laying, marine environment restoration and coral transplantation, gradually promoting the protection and restoration of the marine ecosystem.

By the end of 2019, a total of 1,526 artificial fishing reefs of various types, 21 ship reefs and a batch of volcanic rock reefs have been laid in the marine ranch off Wuzhizhou Island.

A staff member dives in the sea area of Wuzhizhou Island in Sanya, south China's Hainan Province, April 27, 2020. (Xinhua/Yang Guanyu)

Photo taken on May 28, 2020 shows fishes and sea anemone at a marine ranch in the sea area of Wuzhizhou Island in Sanya, south China's Hainan Province. (Xinhua/Yang Guanyu)

Corals are seen on a rope in the sea area of Wuzhizhou Island in Sanya, south China's Hainan Province, Jan. 12, 2020. (Xinhua/Yang Guanyu)

Fishes forage around artificial reefs at a marine ranch in the sea area of Wuzhizhou Island in Sanya, south China's Hainan Province, March 28, 2020. (Xinhua/Yang Guanyu)

Photo taken on Jan. 21, 2016 shows an artificial reef in the sea area of Wuzhizhou Island in Sanya, south China's Hainan Province. (Xinhua)

A staff member patrols at a marine ranch in the sea area of Wuzhizhou Island in Sanya, south China's Hainan Province, March 28, 2020. (Xinhua/Yang Guanyu)