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Facts About Jellyfish

Updated on December 5, 2011
The Jelly Fish Is One Of Natures Most Amazing Creatures.
The Jelly Fish Is One Of Natures Most Amazing Creatures.

Facts About Jelly Fish You May Not Know.

Jelly Fish have a bad reputation and most people who go to the beach fear them. But there really is more to a Jelly Fish than that sting we all fear. And here we are going to explore all kind of interesting things about Jelly Fish.

The Jelly Fish is made up of more than 95 percent water. Their bodies are soft and they have no skeletal structure or outside shell. Jelly Fish are very delicate and they are very easily damaged. If you remove a Jelly Fish from the water it will collapse and die quickly as the water helps support the Jelly Fish. In case you don't know Jelly Fish are found in every ocean in the world from the surface to the deepest points in the ocean.

Jelly Fish have a central axis that runs down the center of their body from their top to their bottom. Jelly Fish have a top and a bottom but do not have sides. Jelly Fish do not have a brain or a central nervous system.

Jelly Fish have a very simple digestive system with only one opening in their bodies. They sting their prey and capture and eat it this way. If you touch or get touched by a Jelly Fish you may very well  get stung and it can be quite uncomfortable and in some cases even fatal.You should know that even Jelly Fish dying on the beach can still sting you so don't pick them up.



Pacific Sea Nettle Jelly Fish.
Pacific Sea Nettle Jelly Fish.
Purple Striped Jelly Fish that lives off the coast of California.
Purple Striped Jelly Fish that lives off the coast of California.
Lions Mane Jelly Fish
Lions Mane Jelly Fish

Jelly Fish use a simple propulsion system to move through the water. They take in water and squirt it out to move through the water. However most Jelly Fish travel around simply by drifting on the current. Quite often the wind will help to move Jelly Fish.

Jelly Fish have no blood , no brain , and no nervous system. They are very simple creatures. They can sense light from dark and have chemosensory pits to identify their prey which they sting and capture.

The Jelly Fishes body consists of three parts. The outer layer of the Jelly Fish is called the epidermis. The gastrodermis and the mesoglea are the other two layers.

Each Jelly Fish has thousands of nematocytes which consist of a capsule that contains a hallow barb and poison in the form of a venom sac. The jellow fish has trigger hairs which trigger and fire one or more of the hallow barbs and the poison of the jelly fish into its prey.


Man Of War Jelly Fish
Man Of War Jelly Fish

The Portuguese Man Of War is infamous for its painful sting and for swarming in the hundreds. The Portuguese Man Of War is responsible for about 10.000 stings a year in Australian waters. Stings on humans usually cause a lot of pain and leave red welts where they sting. People who are allergic to the stings can die from an allergic reaction to the sting. And unfortunately the Portuguese Man of War is found in both Florida and Gulf Coast Waters. The Portuguese Man of War is actually not a Jelly Fish.

There are about 200 species of Jelly Fish and some are even fried and consumed as food mostly in Southeast Asia. The best way to avoid trouble with Jelly Fish is to avoid the Jelly Fish. If there are a lot of Jelly Fish in the water avoid swimming there so you don't get stung. Also avoid picking up or touching Jelly Fish that wash up on the beach as dying or even dead Jelly Fish can still sting you.

If you do get stung by a Jelly Fish you can help the pain of the sting by wiping the area that was stung with a clean washcloth soaked in vinegar. If you think or know you are allergic to jelly fish stings get help at once. If it is a Portuguese Man of War that has stung you seek medical assistance. Do not use vinegar but seek medical assistance.

There is much more to learn about Jelly Fish and related species than what scientists now know. Colonies of Jelly Fish are now being kept at some aquariums and new species of Jelly Fish are discovered quite often. Jelly Fish are fun to study and learn about but know that Jelly Fish can sting you and if you are allergic could even be fatal.

Thanks for reading my Hub Page on Jelly Fish and if you have questions or comments please post them below.

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Thanks for reading my Hub Page about Jelly Fish. If you have comments or questions please post them now.

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    • crazyhorsesghost profile imageAUTHOR

      Thomas Byers 

      6 years ago from East Coast , United States

      Yes I have also eaten them in several places around the world and I was pleasantly surprised at their taste. Thanks for the comment.

    • Peter Dickinson profile image

      Peter Dickinson 

      7 years ago from South East Asia

      You forgot to mention that they are quite tasty too, in spite of there not being much too them. I had a sting in the Philippines which left me in considerable pain for days. A child had been killed by one on the beach a few days before. Not a creature to mess with. Nice hub. Good choice of photos. They make one of my favourite aquarium exhibits.

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