Filter Feeder

Filter feeders (a sub-group of suspension feeders) are animals that feed by straining suspended matter and food particles from water, typically by passing the water over a specialized filtering structure. Some animals that use this method of feeding are clams, krill, sponges, baleen whales, and many fish (including some sharks). Some birds, such as flamingos, are also filter feeders. Filter feeders can play an important role in clarifying water.