Filter-feeding is a method used by various aquatic animals to obtain food by straining small particles from the water. These animals, such as clams, whales, and sponges, have specialized structures that allow them to capture tiny organisms like plankton and detritus. They draw in water and filter out the edible particles, which are then consumed. This feeding strategy is essential for many marine ecosystems, as it helps maintain water clarity and nutrient cycling. Filter-feeders play a crucial role in the food web, providing energy for larger predators and contributing to the overall health of their habitats.