Crabs can be frozen. Freezing can keep the flavor of crabs unchanged. Crabs that are too rich in water and nutrients are prone to deterioration. When crabs are placed in the freezer, the water turns into ice, which is not conducive to bacterial parasitism. At the same time, the bacterial content in the freezer compartment of the refrigerator is low. So it can be stored for 3 months. Crabs are high in unsaturated fatty acids. Unsaturated fatty acids will oxidize if left for too long, resulting in a reduction in nutritional value. Therefore, it is recommended to eat them as soon as possible within three months.

Crabs: Crabs are crustaceans belonging to the order Decapoda and the class Softshell. Their bodies are protected by a hard shell and they breathe through gills. In terms of biological taxonomy, it is the same animal as shrimp, lobster, and hermit crab. Most types of crabs live in the sea or offshore areas, and some live in freshwater or land. Common crabs include swimming crabs, blue crabs, blue crabs, and Chinese mitten crabs. The body of a crab is divided into the cephalothorax and abdomen. The back of the cephalothorax is covered with a cephalothorax, the shape of which varies from species to species. There are 1st and 2nd pairs of antennae in the center of the forehead, and compound eyes with stalks on the outside. The mouthparts include 1 pair of large jaws, 2 pairs of small jaws and 3 pairs of maxillopods. There are 5 pairs of pectoral feet on both sides of the head and chest carapace. The abdomen is degenerated, flattened, and curved on the ventral surface of the cephalothorax. The male's abdomen is narrow and elongated, mostly triangular in shape, with only the first two pairs of appendages deformed into sex organs.