While most species out there tend to die at some point, there is a specific breed of jellyfish that has developed a way to live forever. Nicknamed the ‘Immortal Jellyfish,’ Turritopsis dohrnii is capable of escaping death, permanently.
Jellyfish lifespans normally range from a few hours to a couple months, with only one species living up to thirty years. The Immortal Jellyfish, however, can morph back to its infant stage after reproducing, thus recreating its own lifespan. Imagine living a whole life, growing old and gaining loads of memories, only to revert back to a young child after reproducing. The Immortal Jellyfish can continue this process for as long as it is capable of reproducing, forever becoming young again. As far as we understand it, there is nothing else like this located on this planet.
(Okay, this isn’t any type of human engineering, but it is pretty damn cool.)