Regeneration

Turritopsis dohrnii has a unique ability to transform its adult cells back into their earlier polyp stage when faced with environmental stress or injury. This biological "reset button" allows it to potentially live indefinitely, making it biologically immortal and a marvel of nature.

These unique salamanders possess an unparalleled ability to regenerate complex body parts, including limbs, spinal cords, and even portions of their brains and hearts. This makes them a focus for regenerative medicine research, offering insights into healing and repair.

Provided a portion of the central disk is still attached, a sea star can regrow lost limbs or even an entirely new body from a severed arm. This remarkable ability is a powerful defense mechanism against predators and a form of asexual reproduction for some species.

These amphibians possess an extraordinary ability to regrow lost limbs, jaws, spinal cords, and even parts of their brains without scarring. This makes them a significant subject of regenerative medicine research due to their unique healing process.