A Yangtze finless porpoise hunts in Poyang Lake in Jiangxi province. The critically endangered species lives only in the middle-lower Yangtze River basin, a region in eastern China.

A close-up of a “smiling” Yangtze finless porpoise at the Baiji Dolphinarium of the Institute of Hydrobiology, Chinese Academy of Sciences. CREDIT: Wang Chaoqun.

Mentions of the critically endangered Yangtze finless porpoise in ancient Chinese poetry have revealed missing information about the habitat of the world’s only freshwater porpoise Almost 300 ...