Until recently little was known about finless porpoises .

直到最近，还很少有人知道江豚这个物种。

Population viability analysis for the yangtze finless porpoise .

长江江豚种群生存力分析。

One of the divers provided a video that shows the finless bodies of dead sharks on the ocean floor .

从其中一个潜水员提供的视频可以看到那些没有鳍的鲨鱼尸体陈列在海床上。

The waters around soko islands are important habitats for the chinese white dolphin and finless porpoise .

大小鸦洲邻近水域是中华白海豚与江豚的重要生境。

The yangtze finless porpoises in tian-e-zhou oxbow nature reserve , near the town of shishou , dare not approach ; too many of their kind have perished in encounters with humans .

在石首市附近的长江天鹅洲白鳍豚自然保护区内的长江江豚，不敢接近他们的汽艇；它们太多的同类已经因为遭遇到人类而丧生。