Yangtze finless porpoises are classified as 'critically endangered ' by WWF . Only surviving mammals in the Yangtze since river dolphins made extinct . Just 1,000 finless porpoises remain - and could be extinct with ten years . Comment: Organisations , with the help of local fishermen , hope to reverse decline .
Yangtze finless porpoises are classified as 'critically endangered ' by WWF . Only surviving mammals in the Yangtze since river dolphins made extinct . Just 1,000 finless porpoises remain - and could be extinct with ten years . WWF and Institute of Hydrobiology now launched program to save species . Organisations , with the help of local fishermen , hope to reverse decline .