Once a crab dies, the bacteria in his body will multiply and decompose crab meat, and some bacteria also produce toxins. If people eat such crabs, they will cause food poisoning, and the common manifestations are nausea, vomiting, abdominal pain and diarrhea. In severe cases, dehydration, electrolyte disorder, convulsion, even shock, coma and septicemia may occur. But no one will die!

Frozen sea crabs can be eaten, but they must be cooked!