Finless porpoises seen in Yangtze River in Yichang, C China's Hubei

Finless porpoises swim in the lower reaches of Yangtze River in Yichang, central China's Hubei Province, May 12, 2021. The finless porpoise, an endemic species in China, is an important indicator of the ecology of Yangtze River. (Photo by Wang Gang/Guangming Picture)