What animals in the world have three hearts?

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.

Animals with two hearts survive as earthworms. Earthworms are rich in nutrition, rapid reproduction, miscellaneous diets, and high yield in artificial breeding. Good economic benefits.

Earthworms can be used as a valuable medicine** for many diseases, and can also be used as high-protein food and feed.

Earthworms dig holes to loosen the soil, decompose organic matter, create good conditions for the growth and reproduction of soil microorganisms, and play a special role in soil improvement, eliminating public pollution, protecting the ecological environment, in material cycle, biodiversity, etc.

Earthworm living habits

1. Likes moisture and is afraid of immersion.

Earthworms prefer to live in a humid environment and should not be too dry, but they should not be too wet to soak (except for water earthworms). The humidity of the substrate here includes two aspects, one is the humidity of the base soil, the other is the humidity of the air humidity, the humidity of the general breeding base soil is required to be 40%-60%, (it is good to hold the fingers of the base soil to see the water and not to flow down), and the relative humidity of the air is adjusted to 60%-80% as well.

2. Temperature-loving, cold-phobic, heat-cold.

Earthworms like to live in warm environments, and they are afraid of both cold and heat. In 0 -5 dormant, 32 or more stop growing, 40 or more death, the suitable temperature is 15 -30, the best temperature is 20 -25, we want to obtain good breeding benefits, it is necessary to maintain the best temperature of 20 -25 breeding environment all year round.

Earthworms prefer to live in a quiet environment and are most afraid of vibrations. Farms should be located in quiet places. Do not shake or frequently turn the base soil up and down. Frequent vibration will adversely affect the growth and reproduction of earthworms.

4. Acid-loving and salt-phobic.

Earthworms prefer to live in acidic or neutral soils, or in environments with water sources, and are most afraid of approaching saline, alkaline soils, or saline water sources. If you encounter saline soil or water sources, adjust the pH. The alkali should be adjusted with ammonium dihydrogen phosphate, and it can also be adjusted with 2% carcoal water, otherwise the earthworm can not survive.

5. Likes sweet and is afraid of spicy.

Earthworms like to eat sweet, sour, and fishy food, such as watermelon rinds, rotten fruits, rotten tomatoes, and fish washing water. Most afraid of eating spicy food, such as garlic, green onions, peppers, etc., with the city's domestic garbage to feed earthworms should pick out the spicy food and then feed.