2. Scallops belong to mollusk phylum, family Scallopidae, with fan-shaped appearance, straight butterfly hinge lines and wing-like protrusions at both ends. It is an important shellfish culture variety in China, and its edible part is mainly composed of protein, which is similar to fish and shrimp, and is one of the important aquatic foods integrating food, medicine and nutrition. There are many kinds, full of meat and delicious. Scallops are widely distributed in various sea areas around the world, inhabiting shallow seas ranging from low tide zone to hundreds of meters, clinging or living freely, and mainly feeding on ephemera algae. Scallops are called "scallops" and are rare sea treasures.