Bivalve Shells
Bivalve shells are hard, protective outer coverings that belong to a class of mollusks known as Bivalvia. These shells are typically composed of two symmetrical halves, or valves, that are hinged together. They come in a variety of shapes, sizes, and colors, and are found in both freshwater and marine environments. Bivalve shells serve as a form of defense for the soft-bodied animals that inhabit them, providing protection against predators and environmental hazards. Additionally, these shells play a role in locomotion, feeding, and reproduction for the organisms that possess them.