乐生活Mytilus edulis, also known as shellfish, is called Haihong in northern China, and its dried products are called light vegetables. There are many kinds of mussels, about 30 species in China, of which more than 10 species are of great economic value. The shell is wedge-shaped, with a thin front end and a wide and round back end. Generally, the shell length is 6-8 cm, and the shell length is less than 2 times the shell height. The shell is thin. The top of the shell is near the front end of the shell. The two shells are equal, symmetrical left and right. The shell surface is purple and black. It has luster. The growth lines are fine and obvious. It grows in a ring shape from the top. The inner surface of the shell is gray-white and the edge is blue with Pearl luster. The hinged part is longer, the ligaments are dark brown, about the same length as the hinged part. Hinged teeth. Underdeveloped. The posterior closure muscle degenerated or disappeared. The feet are small and soft.
Source: nipic.com
