Crabs have intestines, but they are not obvious and their structures are not complicated. When we eat crabs, we can see a sharp white sac tightly attached to its carapace. This is its stomach. Never eat it. Then, turn its belly over, and a black bulge can be seen in the center of the inner wall, which is its intestines. This intestine connects with the stomach at the top and leads to its anus at the bottom.

Because crabs like to catch fish, shrimp, snails, mussels and some aquatic insects larvae, and sometimes they eat aquatic plants and rice, and even rotting animal carcasses, so their intestines are black. Crab yellow is crab yellow.

It contains a lot of nutrients such as protein, fat, phospholipids and vitamins. , is essential to the human body, rich in nutrition.

Can be made into many delicious dishes: crab porridge, crab tofu and so on.