Crab paste is translucent jelly-like, which is the substance in male crabs. There are two main colors, namely blue-white or black.

Crab paste is rich in protein, minerals, fat and other nutrients. Proper consumption of crab paste can supplement human needs.

Body parts of crabs

1, head and chest

The head and chest of a crab are collectively called head and chest. The color is blue or brown, and there are many lines distributed, just corresponding to the stomach area, gill area, heart area, intestine area, neck groove, triangular flap, posterior lobe of liver, forehead area and other parts of the crab. The forehead area has warty processes, compound eyes and tentacles.

2. Abdomen

Crab's abdomen is folded under the head and chest, also called belly navel. * * * consists of seven bellies. 1 ~ 2 abdominal segments are closely connected, and 3 ~ 7 abdominal segments gradually narrow. Moreover, the male and female crabs are different, and the shape of the navel is also different. The navel of the male crab is triangular, while that of the female crab is semicircular, with fluff around it and degenerated abdominal limbs inside.

3. Chest and feet

Crabs have five pairs of chest feet, including four pairs of walking feet and a pair of pliers. Among them, the claws are thick, with claws at the front end, which can prey, dig holes and defend, while the crabs have slender walking feet, which are mainly used for crawling, digging and swimming.

4. Internal structure

The internal structure of crab is divided into six systems: digestive system, circulatory system, respiratory system, nervous system, reproductive system and excretory system. The digestive system includes mouth, esophagus, stomach, midgut, hindgut and anus, and there are two nervous systems, namely cranial nerve and thoracic nerve.