China's Ministry of Ecology and Environment released a report on a blue hole in Huangyan Dao in the South China Sea Thursday, which said the rare coral reef-formed feature is the first of its kind identified in China. #XinhuaNews
China's Ministry of Ecology and Environment released a report on a blue hole in Huangyan Dao in the South China Sea Thursday, which said the rare coral reef-formed feature is the first of its kind identified in China. #XinhuaNews
