Jellyfish venom of the jellyfish come from?

Jellyfish venom of the jellyfish come from?
Of toxic or poisonous jellyfish from the needle inside the nematocyst venom in sea water is dangerous. A jellyfish He used to hunt. Victims unconscious before they eat. When we happen to hit a fire or perhaps a poisonous jellyfish. Whiskers or needles, poisoned his floating under water, only the needles poison to our pain, burning pain, heat immediately, even in water, itching, rash, swelling of burns may cause nipple angina suffocation restlessness, insomnia, fatigue. a light fever and some types of jellyfish are dangerous. Cause death. (Still can not find this type of jellyfish in Thailand) lesions caused by jellyfish this light. Usually it is burning. And chronic wounds. It may be a scar.
Jellyfish To the beach in the rainy season. One thing we should be aware that an animal is poisonous jellyfish in the sea, a type of invertebrate. Most live in the sea. But there are some in fresh water. Jellyfish are animals in the same coral. The cells used for the more toxic and more coral. Some jellyfish stings may be shocked to death. Even dead jellyfish found it expedient to bring the beach to play. It may also be toxic and cause danger. When the tentacles of a jellyfish jellyfish might be stuck having to remove it as soon as possible. But do not use your bare hands because the hands are against it. A thick cloth, wood chips, sand, dry powder or flour, gently rub off the bag, do not rub it, some do not spit venom. The rub is that the increase of toxic emissions. Then rinse the area gently with water, alcohol, ammonia, oil or lotion to get close. Villagers use ผakbuggtael. Most of these are toxic to the protein degradation. Then, when the poisonous jellyfish from the water immediately. If severe symptoms would have drowned.
Jellyfish (also known as jellies or sea jellies or a stage of the life cycle of Medusozoa) are free-swimming members of the phylum Cnidaria. Medusa is another word for jellyfish, and refers to any free-swimming jellyfish stages in the phylum Cnidaria. Jellyfish have several different morphologies that represent several different cnidarian classes including the Scyphozoa (over 200 species), Staurozoa (about 50 species), Cubozoa (about 20 species), and Hydrozoa (about 1000–1500 species that make jellyfish and many more that do not).
Jellyfish are found in every ocean, from the surface to the deep sea. Some hydrozoan jellyfish, or hydromedusae, are also found in fresh water; freshwater jellyfish are less than an inch (25 mm) in diameter, are colorless and do not sting. Large, often colorful, jellyfish are common in coastal zones worldwide. Scientists have evidence of jellyfish roaming the seas for about 500 million years.

In its broadest sense, the term jellyfish also generally refers to members of the phylum Ctenophora. Although not closely related to cnidarian jellyfish, ctenophores are also free-swimming planktonic carnivores, are generally transparent or translucent, and exist in shallow to deep portions of all the world's oceans.
Alternative names for groups of jellyfish are scyphomedusae, stauromedusae, cubomedusae, and hydromedusae. These may relate to an entire order or class.