图片中的蓝色部分是一个等足类动物---一种小型的甲壳纲动物。

The blue part of the image is an isopod-a small crustacean.

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更能说明问题的是，尽管极地号是在2002年夏天到2005年夏天这段时间执行的任务，但发现新等足类动物的速率在这之后并没有下降。

More to the point, though, is that as Polarstern pursued its mission during the summers of 2002 and 2005, the rate at which new isopod species were discovered did not decline.

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