It is very small, with a body length of 0.05- 1.4 mm, transparent, and its footprint is almost all over the world. Once the living environment deteriorates, the body will shrink into a barrel, automatically dehydrate (dormant), hibernate and endure.
Ram of the University of Freiburg in Germany once put the water bear worm in the environment of 150℃ and -200℃ (close to absolute temperature) respectively, and then put it in the room temperature for water supply. It miraculously revived. The radiation of 5700 gy, the radiation of atomic bomb can't kill it; The pressure of 600 MPa is six times that of the deepest Mariana trench, and it can't flatten it.
Extended data:
Reasons for the strong viability of water bears;
There are many superoxide dismutase genes in water bear worm, and the copy number of MRE 1 1 gene is more, which is helpful to reduce oxidative damage and repair DNA, thus playing a protective role. In addition, there are some genes related to environmental stress in water bears, which may also help them adapt to harsh environment.
The unique "weapon" of water bear worm to resist radiation damage-damage inhibition protein Dsup was discovered. They also found that this protein can also play a protective role in other animal cells.
References:
Frontier | "Suitable" for water bear worms, can humans resist space radiation? -Tadpole stick
References:
Water bear worm-Baidu encyclopedia