The turritopsis nutricula species of jellyfish may be the only animal in the world to have truly discovered the fountain of youth. Why I am particularly interested about this? Well, partly because I am majoring in biology and have taken a whole course about lower invertebrates such as jellyfish and other slimy animals, but the huge part is because of the huge capability this animal presents to the scientific world! If scientists could discover the mechanism of this reversion of cells, this can advance the medical field tremendously, possibly by regenerating failing organ cells such as liver cells, heart cells or even brain cells. Here's the original post from the Mother Nature Network (check this article about the animals with the longest life span, very interesting) , via Maurice Salem . Since it is capable of cycling from a mature adult stage to an immature polyp stage and back again, there may be no natural limit to its life span. Scient...