Seafood aquatic products live in water, of course, the water content is large, and the water content of sea cucumber is larger than that of ordinary seafood. When the protein in the fleshy part is heated to shrink and squeeze out the water, the internal water content in the fleshy part is reduced, so it becomes smaller. Therefore, fresh sea cucumbers are generally better eaten cold and raw. Cooked food needs to be processed before it is sent out, so that the water is full of fleshy cells, so that the sea cucumber can be puffed up, soft and delicious. If the fresh sea cucumber is directly boiled in hot water and shrunk, the protein will be set, and the cells will not be elastic and can no longer be enlarged, so the fresh sea cucumber can no longer be enlarged after being boiled.