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You can find more facts about this at www.howstuffworks.com
Why do jellies light up
* Jellyfish have no gills lungs, hearts, brains and bones to support there body.
* A jellyfish's body looks kind of like a umbrella that opens and closes. two layers of there cells make up there entire body. the bell of the jellyfish hold up there 'stining cells' ( the things that look like strings)
* Jellyfish are not made of jelly, they are made up of salt, protien and 95% water.
Jelly fish light up because they use it as a defense against prodotors. Some jellyfish, such as sea nettles normally make or create their own light. Or they can glow or give off flashes of light as fireflies do.
* Jellyfish are found in every ocean, from the surface to the deep sea
2.) A group of jellyfish is called a bloom or swarm
1.) Jellyfish first appeared about 650 million years ago and are found in every ocean, from the surface to the deep sea. Some are also found in fresh water
Jellyfish produce light called bioluminescence. Bioluminesence is a prosess that is a chemical reaction that produces a blue kind of light. also Some hydrozoan jellies also possess another protein known as green fluorescent protein, which takes the blue light and shifts it to a green color. Light production typically happens after a jelly is touched, you can find more information about this at www.jelliezone.org
4.) Jellyfish do not have a brain or central nervous system, but rather have a loose network of nerves, located in the epidermis, which is called a “nerve net.”
3.) Jellyfish do not have a respiratory system since their skin is thin enough that the body is oxygenated by diffusion
By: Taylor waggoner