What do you think is the most vital animal in the world? Why?

Cockroaches, extremely adaptable, have survived and evolved for hundreds of millions of years and have never gone extinct.

Isn't it the one who bleeds 7 days a month and persists for decades and doesn't die the strongest?

Jack bauer. Because you can step on it as you like. And the international practice is to say that Xiaoqiang is very strong

Turtles have a thousand-year-old king, eight are said to be common for hundreds of years, and other animals are rare for hundreds of years.

Of course, it's a tardigrades, and the atomic bomb can't kill it.

Xiaoqiang who can't be killed - cockroaches.

The famous entomologist Ronde Cranpest, in the search for the world's most tenacious survivors, came to the conclusion that the world's most tenacious animal is very, very small, and it is a tardigrade.

Tardigrades are found almost anywhere on Earth where moss grows. At the bottom of the ocean, the top of the Himalayas, steamy hot springs, cold Arctic heaths, arid deserts and humid rainforests, etc., have its traces; It will even appear in the backyard of your home.

Tardigrades are so small that they are not visible to the human eye. When viewed under a microscope, they look cute, like little teddy bears. This critter always waddles and crawls on four pairs of small chubby legs, sucking sap from the moss.

So, when the surrounding environment deteriorates, how can these little creatures, who seem very fragile, be more tenacious than the big grizzly bear? When the environment deteriorates, tardigrades curl up and remain motionless. Then.

They will release 99 percent of the water in their bodies and enter a state of suspended animation. When the body temperature drops to a certain level, the animal shrinks its body, retracts all its legs, and shuts down all the systems in its body until the environment improves.

Tardigrades can survive not only in the cold of minus 200 degrees Celsius, but also in the scorching heat of 151 degrees. It can also survive in the desert, and even camels can't compete with tardigrades in terms of drought tolerance. Once upon a time, there was a tardigrade trapped in a dried moss specimen from a museum.

120 years later, when scientists added water to the moss, it turned out to be resurrected again. The endurance of this animal is not only reflected on Earth, they can also live in the vacuum of space.

<> "The Most Tenacious Animals in the World.

Planarians. Planarians belong to the order Trientero, 2 mm to 10 cm long. It is flat and symmetrical, with only one eyepoint and olfactory organ.

It lives under the rocks of freshwater streams and feeds on live or dead worms, small crustaceans, and insect larvae. It is the strongest creature known to regenerate state silver.

Rotifers. Rotifers are mysterious creatures. When environmental conditions deteriorate, such as when the water dries up and the temperature is unpleasant, rotifers stop moving, and when they die, their metabolism is almost immeasurable, and when the environment is suitable, they can resume their activities.

Rotifers are widely distributed in a variety of freshwater, kelp, rocky oceans, and inland brackish waters.

Lighthouse jellyfish. The lighthouse jellyfish is a very small jellyfish with a diameter of only 4-5 mm. This seemingly ordinary lighthouse jellyfish is proficient in time magic and has amazing biological properties - it is the only creature known to be able to return to the larval stage of stupidity after sexual maturity.

Water bears. The water bear, also known as the water bear worm, nicknamed "Xiaomei", is a common name tardigrade. There are about 900 species recorded, many of which are found all over the world.

Water bears are the most vital animals on the planet. They can survive in outer space without protection.

<> "The 5 animals with the most tenacious vitality are absolutely unexpected."

1. Tardigrades: This kind of animal can enter a state of suspended animation in the era of harsh conditions, and will not die without eating, drinking, and is represented by water bears. The phylum Tardigrades is a phylum of the animal kingdom that lives mainly in freshwater sediment, moist soils, and the water membranes of bryophytes, with a few species living in the intertidal zone of seawater.

2. Clams: Clams live on the shallow seabed, and there are many varieties such as flower clams, clams, and Shih Tzu tongue. The oldest clam found to be 507 years old was unfortunately killed by researchers during the study.

3. Lighthouse jellyfish: The lighthouse jellyfish is a small jellyfish with a transparent body and a red digestive system that can be seen, like a lighthouse, hence its name. The lighthouse jellyfish is a representative of immortality, and the secret of its immortality lies in the differentiation process of stem cells, which can be continuously regenerated.

Unless eaten by other animals, lighthouse jellyfish are "immortal".

4. Planarian: It is a hermaphroditic organism that likes to live in clean oxygen-rich seawater or freshwater. Planarians live under rocks in freshwater streams and feed on live or dead worms, small crustaceans and insect larvae.

5. Rotifers: Rotives have cryptophytic properties. When environmental conditions deteriorate, such as when the water body dries up and the temperature is not suitable, they can stop moving, as if they are dead, and their metabolism is basically absent.

When the environment improves, they will recover again. Rotifers have a high rate of reproduction due to their extremely fast reproduction rate and high production in the ecosystem structure.