5 Animals Resistant To Death

These animals are so resistant to the death they manage to survive extreme temperature or re-live their lives again and again. Its clear why they are considered to be immortal.



Turritopsis nutricula is better known as immortal jellyfish and totally deserves its nickname. After reaching sexual maturity this animal completely reverts to sexually immature and transforms itself into polyp. Then, the jellyfish starts maturing once again. It lives similar to the life circle of the main character of the movie The Curious Case of Benjamin Button, it gets old, and then gets younger, gets old again Theoretically, the circle can go infinitely.



The hydra is very similar to the immortal jellyfish regarding the improbability of dying of old age. Scientists believe that the hydra does not undergo senescence, having in mind the revelation that its cells continually divide allows defects and toxins to be diluted. However, there is no consensus among them about this question. Although the hydra shows signs of immortality, the turritopsis nutricula is still considered as the only immortal organism on Earth.



The lungs are the weapon that makes the lungfish resistant to death. They enable the lungfish survive some prolonged dry spells, some of them even for a whole year. This animal can burrow itself alive into a mud and go into a state of aestivation, which allow it to live for some period without any nutrients. The most interesting example about this fish says that it has lived in dry sand for six months after the metal box full of mud where it was placed has been lost during transportation. When it was found, the mud had already turned into dry sand, but after pouring some water into the box the lungfish continued breathing, like nothing happened.



Although is commonly known as water bear, this creature has nothing to do with them. If bears were so indestructible like tardigrade, they would have been far from extinction today. Tardigrade is microscopic, 1.5 mm long water-dwelling animal with eight legs which can be found anywhere in the world from the Himalayas to the seas, from the polar areas to the Equator. Its flexibility to various living conditions is what makes the tardigrade so resistant to death. It can survive temperature as low as -273C (-459F) and high as 151C (304F), radiation 1000 times bigger than any other animals can survive, while decade without water is not problem as well. In 2007, tardigrades have been exposed in most extreme conditions in vacuum of space in the low orbit. You guess, it was still alive when returned on Earth.



Tree weta is giant insect similar to cockroach that is endemic for New Zealand. However, it could survive in much colder countries. Its blood contains a kind of protein which prevents the water from freezing, enabling it to keep the blood flowing even when its body is freeze. The heart and the brain of the insect are dead during the zombie state, but they somehow work like nothing happened when thawed out.

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