Turritopsis dohrnii, a small species of jellyfish native to the Mediterranean, is commonly known as the “immortal jellyfish, and it literally lives up to its name. Possessing the ability to revert to its a sexually immature stage instead of succumbing to an inevitable death, this tiny creature holds the secret to true biological immortality.
Humans have fantasized about immortality since the beginning of time. We have countless myths and stories about it, but until the mid-1990s we had yet to find any proof that eternal life on this earth was possible. In 1996, researchers published a study about a small species of jellyfish capable of reverting from an adult, solitary individual to its juvenile colonial state, thus cheating death and achieving potential immortality. Just as long as it wasn’t consumed by predators and it could be sustained by its environment, the jellyfish could repeat this cycle indefinitely and live forever. To this day, the immortal jellyfish remains the only known immortal animal.