With a comically tiny mouth and a blunt cauliflower tail, the ocean sunfish is little more than a swimming head. Which is, in fact, its name in German. Grotesquely oversized, these monsters appear to loll helplessly on the ocean surface, sunbathing like blobby grey rafts. They support their great bulk on a meager diet of jellyfish, which means they have to eat a lot of them. Unfortunately, their snack of choice drifts along as far as 2000 chilly feet below the surface, and these tropical loungers don’t care for cold. In response, the Mola mola has evolved a suite of highly unusual adaptations. Can humans find inspiration in this strange diving expert? Find out in The Biomimicry Manual!