We can always see this sentence: The brain is a good thing, but you don’t have it. This may seem like a curse word, and it is indeed a curse word, but there is a species in the ocean that has no brains, and they are jellyfish.
The body structure of the jellyfish is relatively simple and has a double-layer structure. It is like a small plastic bag inside a plastic bag. The outer plastic bag is the cortex of the jellyfish, and the inner plastic bag is It's the stomach layer of the jellyfish. The two layers of plastic bags are glued together by the mesogluta layer in the middle. In my opinion, this structure is only a little better than that of Paramecium, but even this species with a simple structure survives on the earth. More than 600 million years old. And when you dominate the ocean for a while, how can you make humans with brains embarrassed?
The water content in our human body is about 60%. Although it is only a mere 60%, women are still said to be made of water. Even the most watery women are not as watery as jellyfish, because The water content of most jellyfish exceeds 95, and some jellyfish even have a water content as high as 98. This is truly made of water.
Although these soft and soft jellyfish look dreamy, they are actually terrifying carnivorous animals. Yes, that’s right, they eat meat, including plankton, small fish and shrimps. on top of the recipe. Most jellyfish have long tentacles, and these tentacles are densely covered with numerous stinging cells.
The stinging cells on their tentacles are very small and contain stinging filaments. When the stinging cells are stimulated, the stinging filaments will be emitted from the nematocysts and shot towards their prey. After being poisoned, the jellyfish will be paralyzed, and then the jellyfish will use its tentacles to roll the prey into the stomach layer and feast. Of course, jellyfish have no teeth, so their prey is chemically digested in the stomach lining.
Although these stinging cells are very powerful, they are disposable, but jellyfish renew their stinging cells very quickly. Even if the previous batch of stinging cells are scrapped in the battle, the jellyfish will soon be replaced. It will produce new stinging cells to keep the jellyfish fighting. It is so powerful, are you afraid?
Most jellyfish will float on the sea surface because they are relatively light. At the same time, they are almost transparent and difficult to detect, so there will always be some swimmers on the beach who are affected by them. . You should know that some jellyfish are poisonous and can cause death, such as box jellyfish.
After being stung by the stinging threads of a box jellyfish, redness, swelling, and intense pain will appear immediately. According to the description of the person who was stung, the feeling is like being burned by a soldering iron. Severe cases may cause fainting on the spot, or even death.
The jellyfish is soft and soft, but it is the most dangerous and deadly killer in the ocean. Although it has no brain, it is the dominant one in the ocean.
Especially when a group of jellyfish appears, almost all passing small fish and shrimps will die.
What’s even more terrifying is that even dead jellyfish can kill you.
If you are playing at the beach and see a dreamy-looking transparent creature on the beach, don’t be curious to touch it, because it is most likely a jellyfish, even a dead jellyfish. The stinging cells on the tentacles have still not lost their activity. Try touching it and see if it makes you realize what curiosity killed the cat.