白暨豚生性害羞，视力几乎为零，是世界上最古老的豚类之一。它有2000万年的历史，只存在于长江之中，被列为全世界12种最濒危物种之一。

　　Around 400 baiji were believed to be living in the Yangtze until the 1980s. A 1997 survey spotted 13. Two years later their numbers were down to two.

　　据说在20世纪80年代，长江中大约有400只白暨豚。一份1997年的调查指出当年白暨豚数量下降到13只。两年后，白暨豚的数量锐减为两只。

　　The rapid disappearance of this dolphin over the past two decades coincided with the rapid expansion of economic development along the river. Research on some dead baiji collected in recent years showed that more than 90 per cent of the deaths were caused by human activities.

　　过去二十年间白暨豚迅速消失，同一时期，长江沿岸经济快速发展。通过对近年死去的白暨豚进行研究，结果表明，在死去的白暨豚中，有90%是由于人类活动而造成。

　　One reason is that over-fishing has cut the dolphins food sources. Dams built along the river and neighbouring waterways have also kept them from swimming into and out of their habitats. Meanwhile, waste discharge has seriously polluted the river. And heavy river traffic has greatly reduced their living space.

　　其中有个原因就是过度捕鱼断绝了白暨豚的食物来源。在长江边以及附近的水域中还修筑起了很多水坝，这迫使白暨豚不停地更换它们的栖息之地。同时，垃圾排放也严重污染了水源。繁忙的长江交通使它们的生活空间大为减少。

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