In the 1980s a tiny jellyfish was discovered that could cheat death by reversing the aging process. Originally found in the Mediterranean Sea, this creature known as Turritopsis dohrnii has spread across the world's oceans. Laboratory observations by scientists Christian Sommer and Giorgio Bavestrello revealed that when stressed the adult jellyfish sank to the ocean floor and reverted to its earliest stage, a colony of polyps, via a process called transdifferentiation. Although it remains vulner