. >> in the remote beach town of shirahama, in southern japan, a man has made it his life's mission to unlock this creature's secret. >> nice meeting you. >> did you find some good stuff? >> yes. (shows bucket) >> professor shin kubota is a biologist with kyoto university. he explained to me that nature holds many mysteries which humans can learn from. >> the one thing that is not a mystery in nature, that's not a mystery is wherever there is life.... there is death. >> ahhh... >> right? >> the immortal jellyfish -scientific name: turritopsis dohrnii- sounds fantastical. but what it can do is amazing - and its something no other known species on earth can do. these tiny organisms can reverse their aging process, reverting back to the original polyp form after reaching an adult state or experiencing trauma. but despite its name this jellyfish is only technically immortal. >> why are the immortal jellyfish so hard to keep alive? >> the secret he says lies in studying what is the blueprint of all living species - the dna in its genome. >> you really enjoy these guys? huh? >> he hasn't yet