filter feeding

World English Dictionary
filter feeding
 
n
zoology a method of feeding occurring in some aquatic animals, such as planktonic invertebrates and whalebone whales, in which minute food particles are filtered from the surrounding water
 
filter feeder
 
n

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Encyclopedia Britannica
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filter feeding

in zoology, a form of food procurement in which food particles or small organisms are randomly strained from water. Filter feeding is found primarily among the small- to medium-sized invertebrates but occurs in a few large vertebrates (e.g., flamingos, baleen whales).

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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