What are the animals with three hearts in the world? What is their living environment like?

Octopuses, squid and other cephalopods have three hearts, they basically live in the deep sea, the water pressure is large, they feed on various animals, and there are often large animals to hunt them, and the living environment is relatively harsh.

There are horseshoe crabs, octopuses and cuttlefish, all of which have three hearts and have a very peculiar structure; These animals are very serious and they are very strict about the environment, and if the surrounding environment is polluted or damaged, it will cause them a devastating blow.

This animal is the octopus, and in this world, only the octopus has three hearts. This animal lives in a very dark environment, and will live in water, also in humid places, may live in deep sea areas, and these octopuses in the deep sea may be relatively large.

1. Octopus. These three hearts are two gill hearts and one whole body heart. Octopus's blood is blue because it also contains a hemocyanin, also known as serotonin, which is synthesized in the gill heart.

The octopus has a conceptual mind, it can solve complex problems on its own, this is proposed by experts who have been engaged in research in its field for many years, it is this kind of brain that is strong enough, so that it can have the ability to walk on two legs, but in fact the octopus is one of the creatures that has ever appeared on our planet and humans, he has many pairs of eyes, and has three hearts and two memory systems, one memory system refers to the memory system of the brain, and the other is directly connected to the suction cup. The octopus's brain is rich in neurons and has very sensitive tactile receptors. These abundant neural structures in the brain give it a powerful thinking ability that surpasses that of ordinary animals.

2. Earthworms. <>

The earthworm may not only have three hearts, it may even have 10 hearts, because it belongs to annelids, and it is a lower annelid, and its body has no obvious merger, resulting in its heart will also be divided into several unequal hearts with all the segments of the body, which may also be the reason why the earthworm's body can still survive after being divided into several segments. Their vascular system is very complex, and there is a dorsal blood vessel on the back of the digestive tract, which flows directly through the heart into the abdominal blood vessels.

3. Squid. <>

The university conducted an autopsy on the giant squid and found that it had three hearts in its body, one of which was used to transport blood and two in its gills, in the Ross Sea in Antarctica. Squid, although it is customary to call them fish, is not actually a fish, but a mollusk that lives in the ocean, with a slender, long conical body and a suction cup at the tip.

The octopus has a total of three hearts, one heart with blood circulation throughout the body, and two heart-plugging hearts. Cuttlefish also have three hearts, two of which are in the gills and one that supplies blood to the rest of the body. The blood of cuttlefish is blue, not red, and there is copper protein in the blood.

Horseshoe crabs, octopuses, cuttlefish, creatures with three hearts are rare, and this ecological feature is very magical.

These animals include octopus, horseshoe crab and cuttlefish, among which the blood of the horseshoe crab is blue, and its blood has a lot of copper ions, and the medicinal value of this animal is very high.

Octopus,SquidAll three animals, the horseshoe crab (hòu), actually have three hearts.

1. Octopus. <>

The octopus has a total of 3 hearts, one is the main heart, and the other 2 are secondary hearts, the main heart of the octopus is used to supply blood to the whole body of the octopus, and the other two hearts of the octopus will also provide blood supply.

But the main role is to help the octopus filter some waste products from its body, which is very similar to the function of the kidneys in the human body. In addition, the octopus not only has three hearts, but also nine brains, and in addition to one brain on the head, each of the eight tentacles also has a brain.

2. Squid. <>

Squid is also known as cuttlefish, and the squid itself also has three hearts. In the middle is the main heart, and on either side there is a gills, which are smaller than the main heart in the middle. The unique feature of the squid is that it can use its ink to turn the water black, and then it can quickly escape by itself, which is a means of saving the squid's life in the face of natural predators.

In addition, the squid can also change color, and the squid can quickly change the color of its body in a second, so that it can also avoid natural predators.

3. Horseshoe crab. <>

The horseshoe crab is a very old animal, the horseshoe crab appeared when the dinosaurs did not appear, and the dinosaurs have long been extinct, but the horseshoe crab still exists today. Therefore, horseshoe crabs are known as real living fossils.

Horseshoe crabs also have three hearts, and the color of horseshoe crab's blood is blue, this is because horseshoe crabs rely on the copper material in the blood to move oxygen, and the copper substance will become blue when the copper substance is combined with oxygen, so the blood of the horseshoe crab is blue.

The world's three hearts are blue-blooded creatures known as turtles. Most animals have red blood, only a small percentage of other colors appear, and blue blood is very rare. The turtle is very different, not only has this color of blood, but also has two more hearts than other creatures, which is very magical.

There may be some people who are stranger to this creature, thinking that this kind of thing should be a turtle or a soft-shelled turtle, but in fact it is not, this creature is a national protected animal, the shell is very hard, and the color is cyan or brown. This kind of side is more delicious, so many people will catch it, and now it has become a very rare animal and must be protected. In shape, turtles have two eyes, and the remaining two eyes are compound eyes, which can help them sense changes in their surroundings.

The real eye is located on the breastplate and can judge the light and then move its body. According to research, the history of this creature is very long, even earlier than the dinosaurs, dating back to the Devonian period. For hundreds of millions of years, the appearance of soft-shelled turtles has not changed much, but the fish have appeared in a variety of different shapes, which shows that the biological characteristics of soft-shelled turtles are extremely stable.

This creature is omnivorous and will eat small fish or small animals, as well as aquatic plants or plants. The heart of the turtle has something to do with its blood, and the carbon dioxide will be replaced by oxygen or increase the mercury content in the blood during transportation, which is why people can see the blue color of blood. Whether it is used as an experimental drug or food, the availability of soft-shelled turtles is relatively high, so the population is getting smaller and smaller.

Because there is a substance with blood clotting function in the blood of soft-shelled turtles, once it comes into contact with poison, it will form a gelatinous substance that looks like a solid. Many scientists will use this kind of thing as a poison test agent, and they will also kill more turtles.

Now the turtle has been artificially bred but it is more difficult, so some unscrupulous businessmen will catch it in the wild and kill it directly.

Only the horseshoe crab has three hearts. It also has a blue blood marine life, which belongs to the national second-class protected animals.

Horseshoe crabs, octopuses, both creatures have three hearts, but the horseshoe crab will soon perish, and the octopus not only has three hearts, but also 9 brains.

The horseshoe crab, this creature with blue blood and three hearts, is a blue-blooded creature with three hearts that are interrelated.

Octopuses are the only creatures in the world that have three hearts, suggesting that their body structure is different from that of other animals, possibly to prevent predators from tracking them.

Not all animals have hearts.

For example, animals such as coelenterates (common jellyfish, etc.) and mollusks (common squid, etc.) are all animals without hearts.

Coelenterates are mainly composed of body wall, exoskeleton, digestive system, nervous system and respiratory system, and do not have a heart.

Molluscs mainly have a head and feet, and they do not have an "heart" inside.