The axolotl has extraordinary regenerative abilities, capable of fully regrowing severed limbs and even damaged internal organs.
Tardigrades are considered the toughest living beings on Earth due to their extreme resilience. They can survive boiling, freezing, radiation, and even the vacuum of space without harm.
The immortal jellyfish, only about 4.5 mm wide, has the unique ability to revert to an earlier stage of its life cycle, making it biologically immortal.
The sea cucumber has an incredible survival skill—it can liquefy its body to slip into tiny crevices and escape predators. It can also eject its internal organs and later regenerate them fully.
The Alaskan wood frog survives harsh winters by freezing its body solid, stopping its heartbeat and breathing. High glucose levels protect their cells, allowing them to come back to life in spring.
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