Mussels come in all kinds of variations and are consumed a lot. The mussel is perhaps the best known among the shellfish. The mussel is a bivalve and has a dark blue / black colored shell and can reach a diameter of 8 cm. The mussel is also internationally called Blue Mussel and is found in the Atlantic Ocean to the Mediterranean Sea and in the North Sea. You can consume the mussel from the wild, it is often large, but often has little meat. Commercially, the mussel is mainly grown. Mussels are grown in different ways. A common method is the so-called soil culture or the hanging culture.