A little Yangtze finless porpoise (front) is seen swimming with its mother at the Institute of Hydrobiology under Chinese Academy of Sciences in Wuhan, central China's Hubei Province, Sept. 10, 2018. The little porpoise, reproduced via an artificial breeding program, the second of its case, was born on June 2, 2018. It has grown up healthy and sound for a hundred days. (Xinhua/Jin Liwang) 

A researcher monitors a little Yangtze finless porpoise at the Institute of Hydrobiology under Chinese Academy of Sciences in Wuhan, central China's Hubei Province, Sept. 10, 2018. (Xinhua/Jin Liwang) 

A little Yangtze finless porpoise (R) is seen swimming with its mother at the Institute of Hydrobiology under Chinese Academy of Sciences in Wuhan, central China's Hubei Province, Sept. 10, 2018. The little porpoise, reproduced via an artificial breeding program, the second of its case, was born on June 2, 2018. It has grown up healthy and sound for a hundred days. (Xinhua/Jin Liwang) 

A little Yangtze finless porpoise (front) is seen swimming with its mother at the Institute of Hydrobiology under Chinese Academy of Sciences in Wuhan, central China's Hubei Province, Sept. 10, 2018. The little porpoise, reproduced via an artificial breeding program, the second of its case, was born on June 2, 2018. It has grown up healthy and sound for a hundred days. (Xinhua/Jin Liwang)

A little Yangtze finless porpoise (front) is seen swimming with its mother at the Institute of Hydrobiology under Chinese Academy of Sciences in Wuhan, central China's Hubei Province, Sept. 10, 2018. The little porpoise, reproduced via an artificial breeding program, the second of its case, was born on June 2, 2018. It has grown up healthy and sound for a hundred days. (Xinhua/Jin Liwang)

A little Yangtze finless porpoise (front) is seen swimming with its mother at the Institute of Hydrobiology under Chinese Academy of Sciences in Wuhan, central China's Hubei Province, Sept. 10, 2018. The little porpoise, reproduced via an artificial breeding program, the second of its case, was born on June 2, 2018. It has grown up healthy and sound for a hundred days. (Xinhua/Jin Liwang)

A researcher monitors a little Yangtze finless porpoise at the Institute of Hydrobiology under Chinese Academy of Sciences in Wuhan, central China's Hubei Province, Sept. 10, 2018. The little porpoise, reproduced via an artificial breeding program, the second of its case, was born on June 2, 2018. It has grown up healthy and sound for a hundred days. (Xinhua/Jin Liwang)