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RIVER DOLPHIN RUNNING OUT OF TIME

The Yangtze dolphin is the only kind of dolphin that lives in freshwater all its life. Scientists say that thefinlessfreshwater dolphin that has lived in the Yangtze River for over 20 million years, will die out in 15 years. It's in danger of disappearing forever.

Dangers:

■Dredging(挖掘) of their habitat

■Heavy boat traffic in the Yangtze River

■Insecticide(杀虫剂) and mercury(汞)