Dangerous large jellyfish (such as jellyfish), which are common in the hinterland of the ocean, often drift to the beach to compete with swimmers for land because of their increasing number. If you see jellyfish floating nearby, please avoid swimming and don't be curious and play tricks. Its translucent umbrella-shaped head looks quiet and weak, but its tentacles below are deadly weapons. Jellyfish protect themselves by stinging sacs on tentacles (for this reason, jellyfish are classified as echinocysts). When the tentacles touch you, they will be entangled, and at the same time, the stinger will pop out of the bag and stab into your body, releasing peptide toxins. This is the way jellyfish protect themselves. When you break the tentacle, it will still stick to the wound and continue to poison. Whether the jellyfish is alive or dead, or even broken into pieces and washed on the beach, its tentacles may sting. Studies have shown that the toxicity of jellyfish toxin is 250 times that of sea snake toxin and 450 times that of tetrodotoxin, and its effects include neurotoxicity, hepatotoxicity and cardiotoxicity. Sarcocystis can dilate the capillaries of the victim's body and increase permeability, leading to hypotension, shock and pulmonary edema. There are many kinds of poisonous jellyfish in the northern and southern waters of China, such as the man's hat jellyfish, the fire jellyfish, the baixia jellyfish, the luminous swimming jellyfish, the golden jellyfish, the lamp jellyfish, the wart lamp jellyfish and the sea moon jellyfish, etc., and their injury mechanism is similar to that of the sand jellyfish. According to the experimental results, the enzyme is myofibrillar binding protease, which is partially inhibited at the optimum temperature of 40℃, belonging to serine protease system and metalloprotease system. Different ions have different degradation effects on myofibrillar protein. It can inhibit the degradation of myofibrils, especially myosin heavy chain to a certain extent. It can inhibit the degradation of myofibrils to a certain extent.