If high-protein foods such as shrimps and crabs are dead, if they are handled in time, they will be fine for a week or even a day, and they will be frozen if nothing else. But if they are shepherds and eels, they must not be eaten, because they contain too much high protein, and the high protein will immediately deteriorate into other harmful substances. The high protein content of shrimps and crabs is much lower than before, so we just don’t feel that fresh when we eat them.