Filter feeder
Animals that feed by straining food from water / From Wikipedia, the free encyclopedia
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Filter feeders are a sub-group of suspension feeding animals that feed by straining suspended matter and food particles from water, typically by passing the water over a specialized filtering structure. Filter feeders can be sessile, planktonic or nektonic, and some extant animals that rely on this method of feeding are clams, krill, sponges, baleen whales and many fish (including some sharks). Some birds, such as flamingos and certain species of duck, are also filter feeders. Filter feeders can play an important role in cleaning water, and are therefore considered ecosystem engineers. They are also important in bioaccumulation and, as a result, as indicator organisms.