Survival of the fittest. At first, some fish may not be able to adapt to the pressure, but they evolve over time. In the process of continuous evolution, or gradually adapting to the pressure of the deep sea, but can not adapt to the pressure of the deep sea, so their result can only be the disappearance of the race. But after such a long time, the fish that can survive in the deep sea are the ones that can withstand such high pressure, and those that can't have disappeared throughout history.

So when people see it, they can only see the fish that can survive in the deep sea, and this can be seen in the striped bass, these deep-sea fish have organs that are different from ordinary freshwater fish, and due to the pressure of the environment, they have evolved the right organs. Fish can survive because they can adapt to their environment. Think about it. If you took it into shallow water, this furry tail would snap its guts because it couldn't take the low pressure. The same is true for people. People can live normally on land. Once they get in the water, they can't take that high pressure.

Therefore, fish can survive under this high pressure because they are adapted to the pressure and the environment. The water pressure in a fish's environment is the same as the atmospheric pressure in our environment. We know that organisms evolve with their surroundings so that they can adapt to that environment and survive. Therefore, deep-sea fish are also evolving. For starters, their cell membrane fluidity will evolve nicely from small changes in their cell membranes.

When water pressure suddenly rushes out, there will be no egg-smashing effect. In order to adapt to their environment, the physiological functions of deep-sea fish change dramatically. The muscles and bones of deep-sea fish have changed dramatically. Deep-sea fish bones become very thin, it is a relatively flexible state, muscle tissue becomes particularly flexible, which suggests that this is in order to avoid the huge water pressure on the body. And, deep-sea fish don't have swim bladders, so they essentially don't need air or oxygen, and the deep sea has almost no air or oxygen content, so there's no water pressure to squeeze the gases out of the deep-sea fish's body.