1, looking at the appearance, the skin of wild sea crabs is bright and white, and the skin of healthy sea crabs is rough and yellow;
2, look at the attack power, the attack power of wild crab pliers is large, and the attack power of healthy crab pliers is small;
3, look at the action, when the finger is caught by the sea crab, the wild sea crab is loose when it sees water, and the healthy crab moves slowly;
4, taste, wild crab crab meat is filamentous, healthy crab meat is sticky.