Scylla Sanmen can tie the feet of Scylla Sanmen with rope and put them directly into the refrigerator for refrigeration, and the temperature is controlled at 5- 10℃. Cover it with a wet towel and save it. When eating, eat the one with poor vitality first. You can gently touch its eyes with your hand, and eat the one with less agility first. Or put the fresh blue crabs in a plastic bucket, and pour in half of the water, so as not to drown them all, so as not to cause the blue crabs to lack oxygen. Generally, they can be stored at room temperature for about 7 days.
Or put the three-door blue crabs in a cool and humid place, which must be ventilated, such as the bathroom. Or put about 3 cm of light salt water at the bottom of the bucket. Don't fill the mouth of the blue crab with water. It is best to change the water once every two days. It can survive for 5- 10 days in the most suitable temperature and water environment, usually for 3-5 days. Remember not to put the blue crab in the refrigerator, otherwise it will die quickly, nor can it be raised with fresh water, and it will die quickly.