What is a "mussel"?

A mussel is a small, bivalve mollusk that lives in freshwater and saltwater environments. They have elongated shells that are usually dark or bluish-black in color. Mussels are known for forming dense colonies and attaching themselves to rocks, piers, or other hard surfaces using strong byssal threads. These threads allow them to withstand strong currents and tidal movements. Mussels are filter feeders, meaning they draw in water and filter out microscopic plankton and organic particles for food. They play a crucial role in maintaining water quality by filtering large volumes of water and removing impurities. Mussels are also a popular seafood delicacy and are enjoyed in various culinary preparations.