Jellyfish have no brains, why can they dominate the ocean?

We can always see that the brain is a good thing, but you are not. It seems like a curse, it is indeed a curse, but there is really a species in the ocean, and they have no brains. They are jellyfish.

The body structure of jellyfish is relatively simple, and it belongs to a double-layer structure, just like a small plastic bag inside a plastic bag. The outer plastic bag is the cortex of jellyfish, and the inner plastic bag is the stomach layer of jellyfish. These two plastic bags are stuck together by the middle skin, which is better than paramecium in my opinion, but this simple species has lived on the earth for more than 600 million years. And dominate the ocean for a period of time, how can we make intelligent human beings feel inferior?

The water content of our human body is about 60%. Although the water content is only 60%, women are still said to be made of water. Even a watery woman is not watery, because the water content of most jellyfish is above 95%, and some jellyfish are even as high as 98%, which is really made of water.

Although this soft jellyfish is dreamy, they are actually horrible carnivores. Yes, yes, they want to eat meat. Plankton, small fish and shrimp are all their food. Most jellyfish have long tentacles, and these tentacles are densely covered with super many stinging cells.

The stinging cells on their tentacles are very small and contain stinging filaments. When the stinging cells are stimulated, the stinging silk will be emitted from the stinging silk sac and fired at the prey. The prey will be paralyzed after poisoning, and then the jellyfish will wrap its tentacles around its stomach. Of course, jellyfish have no teeth, so their prey will be chemically digested in the stomach.

Although these stinging cells are very powerful and disposable, jellyfish update stinging cells very quickly. Even if the last batch of stinging cells are scrapped in the battle, jellyfish will soon produce new stinging cells, which will keep jellyfish fighting. Is it so powerful?

Most jellyfish are light, floating on the sea, and almost transparent, so there are always some swimmers at the seaside. You know, some jellyfish are poisonous and can kill people, such as box jellyfish.

After being stabbed by the stinging silk of the box jellyfish, it will immediately appear red and swollen, and the pain will be severe. According to the description of the stabbed person, this feeling is like being burned by a soldering iron. Serious will faint on the spot, and even die.

Jellyfish are soft and fragile, but they are dangerous killers in the ocean. Although it has no brain, it is a bully in the ocean.

Especially when a group of jellyfish appeared, almost all the fish and shrimp passing by died.

Worse, even a dead jellyfish can kill you.

If you play by the sea and see a fantastic transparent creature on the beach, don't be curious to touch it, because it is probably a jellyfish. Even if it is a dead jellyfish, the stinging cells on its tentacles have not lost their activity. Try to touch it and see if it can help you understand what curiosity kills the cat is.