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Clams are two-shelled mollusks that live in coastal waters and freshwater shallows. Clam shells are fused at the back with a ligament. There are two heavy muscles that open and close the shells. Clams have no head or extremities. They ingest water and food through two siphons, which are round openings. Clams breathe underwater through gills. Because they eat plankton, clams do not have to search for food. The water carries it right to them. Clams spawn in spring. The males release sperm and females release eggs into the water. When the eggs and sperm come together, fertilization occurs and new clams are born.

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10y ago

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