Do you know ｜ How much do you know about the ＂smiling angel＂ finless porpoise？

Nanjing, August 2, 2007 (Reporter Gu Weiwei, Wang Jimin) With a round head and a naturally rising mouth arc, the Yangtze finless porpoise, known as "smiling angel" and commonly known as "Jiang pig" because of its chubby body, is a national first-class protected animal. They mainly inhabit the waters of the Yangtze River and its tributaries, and often jump up and down in the upper reaches of the water. What are the main characteristics of finless porpoise? Why do you sometimes "spit water" at people? How can we protect the finless porpoise? In this issue, do you know whether to invite Zhou Wei, deputy secretary-general of Nanjing finless porpoise aquatic biological protection association, to lead us into the world of finless porpoise?