Bivalve mollusks

Bivalve mollusks are a group of marine and freshwater animals characterized by their two-part shells, which are hinged together. Common examples include clams, oysters, and mussels. They have soft bodies protected by these shells and primarily feed by filtering plankton and other small particles from the water. Bivalves play important ecological roles, such as improving water quality and serving as food for various predators, including humans. They are also notable for their ability to form pearls, especially oysters. These organisms are vital for ecosystem balance and are economically significant in fishing and aquaculture.