Xiang Rong, professor of South China Sea Institute of Oceanology under Chinese Academy of Sciences, examines the foraminifera sample drilled from the seafloor of the South China Sea on the U.S. drilling ship JOIDES Resolution, March 14, 2017. Dozens of scientists from different countries are on an expedition to the South China Sea, to explore the formation of the sea as part of the International Ocean Discovery Program (IODP). (Xinhua/Zhang Jiansong)
