The monk-hat jellyfish individual consists of two parts: the umbrella and the mouth and wrist. The umbrella is flattened disc-shaped or spherical, the ventral surface of the umbrella has a mouth, the mouth is hanging under the mouth wrist, and there are many small tentacles on the mouth wrist, up to ten meters long, and there are up to 750,000 spiny sacs on it. When the tentacles touch the object, immediately shorten the wound around the victim and fire a stinger to attack. Because the tentacles have a large surface area and a large number of stinging sacs, which can cause severe poisoning damage to the patient, the monk's jellyfish rely on small tentacles around the mouth and wrist suction to catch food. The tentacles have spiny sacs and glandular cells that secrete digestive acid, and when in contact with prey, the stingers fire poisonous stingers to paralyze or kill small animals.
Monk-hat jellyfish like to live in groups, and there are traces of them from all over the world, and from the boat, the scene is very moving: one transparent floating sac after another, the blue-purple brilliance constantly flashing in the sun, and the long, soft tentacles are like beautiful ribbons. Although its appearance is moving, many marine animals dare not approach it, because the tentacles are covered with countless poisonous stinging cells, and the venom inside is as powerful as the venom of a cobra.
The "murder weapon" used by the monk's hat jellyfish to sting people is those dense tentacles. The tentacles are densely packed with tiny spiny cells that secrete deadly toxins, and the toxins secreted by a single stinging cell are insignificant, but when the toxins secreted by thousands of stinging cells accumulate, their toxicity is no less than that of cobras, and the toxins of the monk's hat jellyfish belong to the category of neurotoxins. Swimmers who are stung by a monk's hat jellyfish will feel severe pain and red "whip marks" will appear on their skin. This whiplash will last for 2 to 3 days before dissipating, and the toxin will penetrate into the lymph nodes, triggering allergic reactions, causing fever, breathing difficulties, shock and other phenomena, and even interfering with cardiopulmonary function, which can be fatal in severe cases. To make matters worse, the average length of the tentacles of the monk's hat jellyfish is 10 meters, and when swimmers see the monk's hat jellyfish, they often have lost the best opportunity to dodge.