10 wingless porpoises spotted in the Yangtze River
The flightless porpoise and the Baiji dolphin (or Chinese dolphin), both members of the cetacean family, and the only two aquatic mammals in the river, have been classified as "critically endangered" and placed on the red list. of threatened species from the IUCN (International Union for the Conservation of Nature) in 2013.
Among the very rare species of porpoises, the flightless porpoise is the only one that lives in freshwater, said Mr. Zhang Xianfeng. Its small size and its pretty "smile" make it a very popular animal in China and elsewhere.