Freshwater fish cannot survive if they are thrown back into the sea.
Freshwater fish cannot survive in the sea. Freshwater fish live in fresh water, and the osmotic pressure of water is lower than the osmotic pressure in the fish's body, so water gradually seeps from the surface of its body and the Fish must constantly drain water to maintain its balance. Saltwater fish live in salt water, and the osmotic pressure of salt water is higher than the osmotic pressure of the fish body, so the water flows out gradually and the fish have to drink water. water constantly.
If you put a freshwater fish in seawater, it will die from water loss because the salinity is too high.
On the surface, freshwater fish refers to fish that live in fresh water. However, not all freshwater fish livetheir life in fresh water. Because freshwater fish can be divided into two interpretations: in the narrow sense and in the broad sense. Freshwater fish in the narrow sense refers to fish that live in freshwater throughout their lives. Generally speaking, freshwater fish are divided into three types: primary freshwater fish, secondary freshwater fish and peripheral freshwater fish.
Will it be cold if I go to Qinhuangdao in late June or early July? You want to swim in the sea
When the height exceeds 100 meters, no matter where you jump from, the result will be the same, that is, you will definitely die.
Then the height of the plane is generally greater than 10,000 meters. If you fall from here, the end will be the same wherever you fall. Therefore, it does not matter whether it is the ocean or the land below. It is impossible for people to fall. Survival isimpossible unless you bring your own parachute.
Actually, there is a phenomenon that many students should have seen, that is, when we put our hands in the water, the water flows into all the directions. This is because when the hands enter the water. water, the speed is very slow, which results in the force is also very weak.
As a result, when we break the tension of the water surface, the reaction of the water surface water is also very low. Therefore, generally speaking, as long as the height above the water surface is not high, the reaction force generated when entering the water will not affect the water surface.
So when a person actually falls from the plane, it becomes a free fall. According to scientific calculations, if she opens her limbs, her falling speed is about 40 meters per second, and if she hugs herself. a ball, its speedut reach 120 meters per second.
And if the height of the plane is 10,000 meters, the person will fall between 1 minute and 5 minutes. If there is a cement floor underneath, the person will die upon close contact. The energy generated by gravitational potential energy is too large, the person will die due to organ deformation.
Then if there is an ocean underneath, the result will be the same. Since the energy generated by gravitational potential energy is too large, when it hits the water surface, the water will not have time to move. around, then the surface tension of the water. The water film formed is like a wall of water, transmitting a huge reaction force to you.
In this case, there is no possibility for a person to survive. She will die instantly as if hitting the concrete floor. Hence the idea of jumping from the plane into the plane. the sea is unreliable. Not only can she nothelp people, but she can also help them.You will die in the sea, calm down, brother...
There is a saying among the old people at home, you can't go to the sea without being blessed by the water of the sea. it's muddy.
A few days ago I went to the sea once and it was a bit dirty. Maybe it's because I live here and speak some of the local dialect.
I. I suggest you go to Futian before going to the sea. The sea water is not very cold now. It is better to wait after 3 days of exposure to the sun.
It is good for your health and the water will be cleaner.