Why does a jellyfish sting? Detailed answer

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Why does a jellyfish sting? Detailed answer

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Why does a jellyfish sting?

The jellyfish is one of the strangest life forms found in the sea. First of all, it's not even a fish! She does not have a skeleton, and therefore she is included in a large class of invertebrates.

At 9/10, a jellyfish is made up of a jelly-like substance that makes up basically the stomach cavity. Jellyfish don't have a brain or blood vessels.

There are very tiny jellyfish, but there are also those that reach half a meter in diameter. They also vary in shape and color, and some even become brighter when irritated.

The most interesting type of jellyfish is called "jellyfish". This word comes from the name of the mythological creature Medusa, who had snakes growing on her head instead of hair.

The body of a jellyfish resembles an umbrella, at the edge of which are tentacles and many tiny eyes. The jellyfish's mouth is in the bottom middle.

With its tentacles, the jellyfish stings people so painfully and stings. She has to do this, because in this way she gets her own food. The prey of the jellyfish is the smallest sea creatures, which it stings and paralyzes. After that, the victim with the help of tentacles enters the mouth. Some jellyfish have stinging organs even in the stomach.

Another function of the tentacles is to help the jellyfish swim, although many swim by contracting and expanding the body.

The history of the life of jellyfish is also very interesting. At first, the larvae of the jellyfish swim for a while on their own. Then they attach themselves to seaweed or rocks and turn into a small polyp, which gradually grows and finally takes the form of a jellyfish, breaks off and swims away. Most jellyfish live near the surface of the water, but there are some that live on the bottom of the sea.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

What plant can copy the leaves of many other plants on the same shoot?

A climbing plant found in the rainforests of Chile, the Boquila climbs up the stems of other shrubs and trees and has the unique ability to imitate foreign leaves. On the same shoot, bokillas can grow leaves of different colors and sizes, which depend on the type of nearby leaves of other plants. Bokila manages to copy them almost exactly three times out of four. It is still unknown why the goblet needs such an ability, as well as how exactly the mechanism of multiple mimicry is implemented. Perhaps the chemical signals emitted by each plant contribute to this, or horizontal gene transfer is involved.

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