The Immortal Jellyfish Can Reverse Its Life Cycle
When stressed or injured, Turritopsis dohrnii can transform its adult cells back into a younger polyp stage and start life again. This biological reset allows the jellyfish to potentially avoid death from old age.
💡 Fun detail:
While predators and disease still threaten it, this jellyfish is considered biologically immortal under ideal conditions.
Source: Smithsonian Ocean