I want one!
It takes a diver with very keen eyesight to spot one of the ocean’s most adorable molluscs. This species of tiny sea slug, Costasiella kuroshimae — also known as the leaf sheep — grows, at most, to a centimetre in length (about a fingernail’s width). And they’re superbly camouflaged. Their green bodies perfectly match the colour of the seaweeds they live on, because this is also what they eat. And when they do eat it, something amazing happens: they turn into solar-powered sea slugs.
By way of BBC ScienceFocus Magazine