Turritopsis Nutricula Jellyfish
The Turritopsis nutricula species of jellyfish might be able to live forever. How does it do this? This particular jellyfish is capable of cycling back and forth from its adult stage to an immature polyp stage and back again. This cycling occurs by a process called transdifferentiation, where one type of cell transforms into another. Other animals are capable of this process, but can only use it in a limited respect to regrow limbs. Salamanders and reptiles use this. However, these animals cannot regenerate their entire body like Turritopsis nutricula can.
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