No brain can dominate the ocean, what can jellyfish do?

Author:Look at the think tank Time:2022.07.30

The brain is a good thing, but not all of them have to have ...

The jellyfish has no brain. Its body is only a double -layer structure, just like a plastic bag (cortex) in one plastic bag (gastric layer), and the two layers are sticking to the gel -like glue (middle glue layer). With such a simple structure, jellyfish survived on this multi -ended earth for more than 600 million years.

Before humans relying on the brain to rule the land, jellyfish once dominated in an unpredictable ocean without a complex brain or nerve structure.

Text | Chito Youko

This article is reproduced from the WeChat public account "fruit shell" (ID: guokr42). The original first published on July 25, 2022. The original title was "What can you do if you can dominate the ocean without your brains", which does not mean the viewing think tank viewpoint point of view Essence

The flesh made of water, but it is not vegetarian

In the book, Jia Baoyu said that her daughter was the flesh made of water, and the man was the flesh made of mud. In fact, the average water content of adult men is about 60%, which is higher than 55%of women. It is a pity that men and women in the world are not as good as jellyfish. Some jellyfish water content can be as high as 98%. Swaying in the sea, it turns into a beach soft and soft. Presumably, Brother Baoyu will feel refreshing ...

The jellyfish seems to be weak, but it is a bad carnivorous animal. Floating animals, shrimp and fish are jellyfish prey. Most jellyfish have slender and soft tentacles, and the tentacles are covered with thorns. In addition to jellyfish, corals, anemone and water crickets also have stab cells, so they are classified as thorns.

However, because the scope of jellyfish animals is more extensive than other thoring cells, it is often drifted on the sea and pushed by the waves to push to the beach. The number of mistakes is more. Everyone thought of the water mother for the first time.

The thorns on the jellyfish tentacles are small, containing storing storage barbed wraps. When the thoring cells are physical stimulating, a small amount of thoring cells releases the barbed pest and ejection prey in a very short period of time.

The body fluid that the prey is stabbed will stimulate more stabbed cells through chemical reactions. The piercing will inject the venom of the jellyfish into the prey and paralyze the prey. Finally, the jellyfish's tentacles put the prey in the mouth for chemical digestion, and a meal for a meal to get the energy required for survival.

Not only is the hunting efficiency amazing, but the shaped shape is diverse. There are general hollow pests in injection needles, as well as rolling of spring to increase the piercing of ejaculation, as well as sticky stove -like stabs that are filled with mucus.

The thorn cells of the jellyfish, the stabbing cells, are scrapped after use. At the same time, the constantly updated thoring cells allow jellyfish to maintain combat effectiveness.

The living jellyfish is terrible, and you will not let you go if you die

Different jellyfish have different degrees of lethality. Most jellyfish injuries are not fatal, but some jellyfish are frustrated, such as box -type sailor (as the name suggests, its shape is like a square box), and its toxic can be killed in a few minutes. The chloropa -type jellyfish, Chiropsalmus Quadrigatus, commonly found in Okinawa Summer as an example.

After people touch the jellyfish of the Popu, they will feel the painful pain, and severe people with fainting or even death on the spot. This is one of the adverse reactions caused by jellyfish spiny cytotromy into the human body.

The red swelling part of the stab is scalded like a soldering iron or a trace of a shock, and the victims have headaches, vomiting, a shock in breathing difficulties, and even death. This is because the toxins of the taullars are different, there are toxins that cause skin necrosis, neurotoxic toxins that act on the respiratory center, toxins that cause hemolysis, and toxins that cause allergic reactions.

The scientific name of Jellyfish Yamen is Medusozoa, which comes from the Greek mythology. In ancient Greek mythology, people who see Merusha are influenced by its magic into stones.

After being injured by the jellyfish, he felt pain, lost consciousness, and even shock, and stiffed his body on the sea or beach. Is it just like the magic of the jellyfish in the United States and the United States.

In the mythology, the big hero Perseus cut off the heads of Merbruisa, and used the power of his head to kill the sea monster and turned his opponent into a stone statue. After the jellyfish died, the same power still exists. Seeing that there was a "jelly lying corpse" on the beach, I was curious about reaching out and fiddling with redness and allergies. This is because even after the jellyfish died, the thorns on the tentacles have not lost their activity, and they can still shoot out with venom scrubbing silk stabbing. Essence

Or if you eat a squid, and this squid happens to eat a jellyfish, but not completely digesting this jellyfish, then you may be injured ...

In fact, jellyfish are not intentional, and some jellyfish's thorns cannot pierce human skin. But in short, when you meet the cute and dreamy jellyfish by the sea, don't touch it.

Stone of the "Relaxing"

A jellyfish can ask for your life, what if a group?

Most jellyfish often float on the water surface, and its almost transparent body is elusive in the sea water. Regardless of curiosity or carelessness, there are always some divers or people swimming by the sea. A jellyfish can cause people to death. If a group of jellyfish, it can be. In the movie "Underwater Mobilization", in order to find his son Nemo, the clown fish father had passed through the jellyfish group. But in reality, the little fish who hit the jellyfish group are not so good. When jellyfish gathered, their long tentacles seemed to be swept away when they passed through the jellyfish group.

In addition, the huge number of jellyfish groups will also break the fishermen's fishing nets due to overwhelming and negative, and make a large number of fishing losses from economic value. It will even block the water outlet of Linhai Power Plant, or cause the beach to close the tourism industry ...

What is even more helpless is that many factors that cause jellyfish outbreak -the richness of the sea water, the rise of the seawater temperature, the excessive fishing of the fish, the invasion and diffusion accompanied by the ocean transportation, etc. Solution.

Therefore, some scholars predict that the jellyfish may re -dominate the ocean instead of fish in the future.

The sailor, seemingly weak but full of danger, but no brain can already use Rou Kegang. It is a word of "simple but extraordinary" in the sea.

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