I've been writing a story about a species who call themselves the Madrigogs. They look kind of like anthropomorphic cuttlefish, complete with face-tentacles, colour-changing skin and M-shaped pupils. (Don't ask me to try and draw that!) The humanoid madrigogs are actually the post adult-form. They live most of their lives as mindless swimming creatures mating and feeding under the ice shelf. Then one day, they haul out of the sea, grow hands and brains, and become good little Horrorterror-fearing apprentices. This is not a natural state of afairs.