The annual rate of decline is 13.7 percent and this means the Yangtze finless porpoise could be extinct as early as the 2025.
The population in the mainstream of the Yangtze River is less than half of what a similar survey found six years ago. Food shortages and human disturbance such as increased shipping traffic are major threats to the survival of Yangtze finless porpoise.
Attempts were also made to find traces of the Baiji dolphin but none were found. The Baiji dolphin has now been declared “functionally extinct.”