Wildlife experts track a Chinese white dolphin in Tanjiang River of Jiangmen, south China's Guangdong Province, Feb. 10, 2017. An endangered Chinese white dolphin died Friday night, 10 days after mistakenly swimming up a freshwater river in south China's Guangdong Province. It is thought that the dolphin may have been suffering navigation issues due to its age. (Xinhua/Wang Dongzhen)