The octopus has not just 3 brains, but 9. In order to adapt to survival, there are many wonderful animals in nature with their own intelligence and survival rules. Why is it said that octopus is the closest to alien creatures? The reason is that octopus has a smart brain. In the animal kingdom, the octopus is absolutely responsible for its intelligence. Not only can it think, but it also has a strong memory function. When it encounters a problem, it can use its own brain to think of a solution. How strong is the reflex ability of an octopus?

Relevant departments once conducted experiments in which they put octopuses into glass bottles and then tightened the caps. We will find that after thinking, the octopus can unscrew the bottle cap accurately. It will suck the inside of the bottle cap with its suction cup, and then rotate its body desperately. This seemingly simple action is actually very rare in the animal world.

In addition, the octopus’s camouflage skills are also superb. Although many animals in nature disguise themselves to avoid danger, for example, chameleons change their colors to avoid being eaten, and leaf butterflies can also camouflage themselves. Disguise yourself as a dead leaf to avoid being arrested. The camouflage skills of octopuses are much higher than them.

The octopus' color-changing ability is more intelligent than the chameleon. The body of the octopus has many pigment cells, which can change the color and shape of the body at will. It can also observe the surrounding environment and use foreign objects as camouflage to hunt food. When danger comes, it will turn itself into the same color as the surrounding seaweed and seastones, and its shape will be exactly the same as the seaweeds and seastones. There will also be spots on the surface of the octopus's body similar to those of the surrounding seaweed and coral. When hunting for food, the octopus will also use shells as its own camouflage weapons to catch them all unprepared.

A study found that an octopus can change its disguise one hundred and seventy-seven times in one hour. Octopuses can change their own color in an instant and merge with the surrounding environment. However, researchers once said that octopuses are color blind. So how can a color blind person be able to distinguish the color of the surrounding environment and change itself?

In fact, the skin of octopuses is very sensitive to light. This is also because the octopus’s photosensitive gene is sensitive. Therefore, octopuses not only use their eyes to observe, but can also sense the surrounding environment through their sensitive skin, thereby changing the color of their bodies. The octopus has three hearts

So what are the functions of the three hearts of the octopus? The first heart is to provide blood to the body. We know that octopuses have many tentacles, and the blood supply to these tentacles is completed by the first heart. If one of the octopus's tentacles is cut off, the other tentacles of the octopus will continue to work without any impact.

The other two hearts of the octopus are used to supply blood to the gills on both sides. What’s even more incredible is that the blood of octopuses is not red like other animals, but blue blood. This is caused by the copper element in the blood of octopuses.

The octopus also has nine brains and more than 500 million neurons in its body, so the octopus's receptors are very sensitive. Therefore, the octopus's thinking ability and adaptability are also very developed. Such a sensitive creature is also known as the "Einstein" of the seabed in the marine community.

Many people think octopus is a delicious dish, and some even like to eat octopus alive. But such a smart fish will definitely make incredible resistance. Once a Korean woman swallowed an octopus alive, but the octopus blocked her trachea with its suction cup, and finally suffocated to death. When dealing with thoughtful octopuses, people still have to be cautious. Octopus has two sets of memory functions

The octopus has two sets of memory functions due to its developed nervous system. One set of memory functions originates in the brain, while another set of memory functions originates in the arms and legs. When the octopus's body is stimulated, the arms also respond based on memory function. Therefore, the octopus's arms and legs can also think about problems, which also allows the octopus to quickly judge the surrounding environment and make response measures in the complex ocean world.

The memory ability of the octopus is also one of the best in the animal kingdom. Scientists once conducted an experiment in which they placed an older octopus and a young octopus in two identical water tanks. The octopus needed to go through a complicated method to eat food.

The older octopus at that time quickly found a way to eat the food through his own thinking. The young octopus could not find the correct method, so it quickly found a breakthrough by observing the actions of the old octopus next to it and relying on its own memory ability, and finally ate the food easily. This has to be admired by the octopus's memory ability.

Octopuses can also evolve by sacrificing DNA to complete RNA editing, which is impossible for humans. For example, if an octopus accidentally breaks its arm in life, it will regrow the arm according to its own needs.

There is even more amazing research data. There are more than 30,000 protein-coding genes in octopuses. There are only more than 20,000 humans. We have to lament the special structure of the octopus, so the octopus is often called an alien creature because it is really so smart.