|Photo from National Geographic|
|Illustration from DevBio|
Times have been tough a lot lately it seems. These oddballs of the deep have been reported from across the world's oceans, far removed from their native Caribbean home. Numbers are spiking worldwide. Don't expect to go to the beach and see rafts of them though. Even a huge Turritopsis is no bigger than a human pinky nail. And don't confuse immortality with indestructibility. These critters are just as susceptible to death from predation, disease, and bad luck as the next metazoan. They just won't die of old age. Which is, truth be told, very different from the next metazoan.