Although at first glance they look like ordinary sea creatures, jellyfish have a very interesting structure and their struggle for survival lies behind it. some biological reasons lies.
Then come to them simple but effective structure Let’s take a closer look at this.
Jellyfish do not have a central nervous system.

Instead, their nerve cells are spread throughout their bodies. nerve cells, It responds quickly to external stimuli such as touch or chemical changes. Instead of a brain, they coordinate their movements and catch food thanks to a neural network.
Jellyfish don’t have a heart, so how do they survive?

The answer to this lies hidden in the fact that most of their body is filled with water. jellyfish body, about 95 percent consists of water is formed. Water ensures that substances in their bodies can be transported by diffusion.
This way, nutrients and oxygen easily reach the cells. waste materials are also thrown out of the cells. Thanks to the simple but effective system, jellyfish can survive without a heart.
Feeding and defense mechanisms also play an important role in jellyfish survival strategies.
Jellyfish have tentacles special cells We said that this is how he catches his prey. These cells secrete toxins that paralyze their prey when they come into contact with it. This is how they easily catch and consume their prey.
Moreover, the defense mechanisms of jellyfish are also very effective. Thanks to the colorful patterns on their body and their transparent structure, they can hide from their enemies. Some jellyfish use fish to deceive their predators. bioluminescence (the production of light) He also uses his abilities.
Jellyfish, which move by drifting with the current in the water, thanks to their simple structures their energy efficiently they use. This allows them to survive, even without a brain and a heart.
Sources: Science ABC, Earth Life, National Geographic, Ocean Conservancy
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