Commonly known as "Meretrix meretrix", a treasure in shellfish, is named after its smooth surface and beautiful red, brown and black patterns. Its meat color is jade-white, with strong chewing feeling and fresh taste, which can be eaten raw and cooked. Shells can be used to make exquisite handicrafts. In order to rationally develop the precious resources of Meretrix meretrix, the Meretrix meretrix reserve has been designated in the coastal beach of Dongying City.