The barnacle and the clam are two examples of filter feeders.

藤壶和蛤类是滤过觅食者的两种例子。

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Oysters are filter feeders which means they help clean the water.

牡蛎是一种滤食动物，这意味着它们能够帮助清洁水。

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For the same reason, filter feeders, like clams and worms, burrow underground in most regions.

同样的道理，类似蛤和虫这样的滤食动物在大部分区域都埋在地下。

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Oysters are natural filter feeders.

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Some scientists, giving their imaginations free rein (and extrapolating from Earth's own sea creatures), have suggested filter-feeders, such as whales.

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