A survey of finless porpoises in Asia has revealed there are two species, not one, and that they rarely intermingle.
"Most conservation biologists have a strong feeling that the Yangtze finless porpoise has a very high risk of extinction"- Prof Guang Yang
More worrying, finless porpoises living in the freshwater of China's Yangtze river are genetically unique, say scientists, who warn that greater efforts must be made to prevent these animals, numbering fewer than 1000, from following another Yangtze cetacean, the Baiji, to extinction.
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