The water bear is the most vital creature on the planet. It can survive in outer space without protective measures. It can survive in the Himalayas (above 6000m) and deep sea (below 4000m). They are only 1 mm in size, but tiny bodies have no vitality. Even if they are cooked, frozen, exposed, or placed in a high-radiation environment, they can survive for 200 years. The water bear worm can withstand the low temperature of 457 degrees Fahrenheit, the high temperature of 357 degrees and the 5700 Gray radiation test. The radiation dose of 10 to 20 Gy is enough to kill humans and most other animals.