Immortal Jellyfish: Age Reversal
The immortal jellyfish (Turritopsis dohrnii) possesses a rare biological superpower: the ability to reverse its aging process. When threatened or injured, this tiny jellyfish can transform its adult cells back into their earliest form, essentially reverting to a juvenile polyp and restarting its life cycle. This age reversal ability means it could, in theory, avoid death from old age and potentially live indefinitely under the right conditions.