1 How to preserve live blue crabs? The suitable living temperature of the blue crab is 7-37℃. We can mix light salt with sea salt, soak the bought blue crabs in it for 3-5 minutes, take them out and keep them in a cool, humid and ventilated place. Or put the blue crab in a bucket with a deep wall, pour a proper amount of light salt water, be careful not to pass through the mouth of the blue crab, and change the water every two days.

How many days the blue crab can live depends on the situation.

If the quality of the blue crab is good, the vitality is strong, and the preservation method and environment are good, it can be preserved for about 6 days. However, if the quality of the blue crab is poor, its vitality is weak, and it doesn't eat without water at all, then the preservation method is wrong, and generally it can only live for 1-2 days.

Will blue crabs freeze to death in the refrigerator? It may freeze to death.

As mentioned above, the suitable survival temperature of the blue crab is 7-37℃, while the temperature of the general refrigerator is about 4-8℃. If you put the blue crab in the refrigerator for a short time, it won't die, but it will probably freeze to death for a long time, so it doesn't need to be kept in the refrigerator, but it can be kept at room temperature.

Can the blue crab still be eaten after being put in the refrigerator? It depends.

The low temperature in the refrigerator can inhibit the growth and reproduction of bacteria to some extent. If the blue crab dies in the refrigerator for a short time, it can still be eaten. But once the time is too long, the blue crab will still breed a large number of bacteria, causing bacteria to deteriorate, emitting fishy smell and even stinking. Once it goes bad, it is recommended not to eat it to prevent physical discomfort.