Mussel shell

Mussels are marine organisms in the family Mytilae of the phylum Mollusca. The shell is wedge-shaped, with a black brown surface that is smooth and glossy; The growth pattern is fine and dense, and the inner surface of the shell is grayish blue. The edge of the shell has a narrow edge wrapped in the outer skin, and the closed shell muscle marks and coat marks are more obvious. The hinge part has 2-5 granular small teeth; The ligaments are slender and located at the dorsal edge of the shell, appearing brown. The coat is thin, and the edge of the coat is thick. Mussels are widely distributed along the coast of China. Growing on coastal rocks, it mostly inhabits areas with rapid seawater currents and clear water quality, and has strong resistance to adverse environments such as red tide and sewage. Food is mainly composed of organic debris and diatoms.