Also known as the water bear, the tardigrade is a creature that can survive in extreme conditions that will shock most people. The creatures can survive tremendous heat of up to 151 degrees centigrade. They also live happily in the extreme opposite which would be temperatures as cold as -170 degrees centigrade. They can stay in a dehydrated state for more than ten years, can survive without oxygen and even stand a thousand times the radiation human beings can stand. The most beautiful extremophiles come in more than 900 species and can be found anywhere, from the deepest oceans to the highest mountains.