This photo carried in a report titled "The Investigation and Assessment Report on Marine Ecology and Environment Status of Huangyan Dao" shows Giant clams in the lagoon of Huangyan Dao.

China's Huangyan Dao area in the South China Sea enjoys excellent environmental quality and healthy coral reef ecosystem, said a report released on Wednesday. The report was jointly released by multiple institutions under the Ministry of Ecology and Environment, the Chinese Academy of Sciences and the Guangxi University. (Xinhua)