Scientists have discovered the world’s first known immortal animal. A jellyfish species named Turritopsis Nutricula. This jellyfish can re-enter an earlier polyp stage, restarting its lifecycle after it mates. The jellyfish can repeat this process indefinitely, meaning that it will never die from aging, ever. Researchers hope that studying the Turritopsis will lead to breakthroughs in reversing the human aging process. The jellyfish are originally from the Caribbean but have spread all over the world.