It's true, and it's a very marvelous evolution, the octopus's three hearts as well as nine brains are designed to allow the octopus to move freely inside the deep sea, and to ensure that each of his tentacles can be managed by his body. The octopus is a very smart animal, he is not the dominant position in the deep sea, but there are very few things is his natural enemy, and the octopus IQ is also one of the deep sea animals. Some scientists have done related experiments, the octopus can even open a jar by itself, and then drill in. The octopus is very fond of that kind of confined space, so if you see a jar or bottle or something like that on the beach, you might be in for a surprise.

One, the role of the three hearts

It is well known that the octopus has a very large number of tentacles, and they are very far from the center of these tentacles. Therefore it is very likely that the tentacles will be damaged or no longer grow due to poor blood flow. Therefore, the octopus needs three hearts to control the blood flow of these tentacles, the existence of three hearts can ensure that each tentacle of the octopus body can be uniformly subjected to blood and nutrient delivery. It is also because of this, the octopus tentacles if broken, but also able to regrow out in time.

Two, nine heads

It was said that the octopus is a very intelligent creatures, they have nine heads, each head has a walnut so big, and the nine heads in charge of the octopus action, as well as tentacles. Each of the octopus's tentacles has an independent idea, and because of this, when the octopus is acting or doing something else, these tentacles don't get entangled together.

And the octopus's unique color-changing ability is also controlled by these brains, and the octopus will determine what color they should be based on the various situations around them. Or when they are in danger, so how about spraying ink, these are controlled by these brains, so although the octopus's head is not big, but it is real very smart.