Well, we know enough about jellyfish for me not to even talk about it! They’re delicious with soy, sesame and chili sauce, they can be seen in blooms of 100,000, and freshwater jellyfish aren’t the stinging kind. There is, however, one species of jellyfish that is considered immortal. After this jelly reaches its mature state, it reverts itself, absorb its tentacles and turns back to its polyp state. If it weren’t for predators, it could do this infinitely. Pretty cool, huh?