China launches survey of endangered porpoises in Yangtze River

A scientific survey ship leaves a dock in Shanghai, east China, Dec. 7, 2017. The scientific survey team of endangered finless porpoises gave a briefing during an open day activity Thursday. China launched its first survey of endangered finless porpoises in five years on Nov. 10, to monitor their living conditions in moves to better rehabilitate their habitat in the Yangtze River. (Xinhua/Ding Ting)