The Leaf Sheep Slug: The Animal That Eats Sunshine

This is an animal called the leaf sheep: It’s a species of slug that is partially solar-powered, like a plant. Leaf sheep are kleptoplastic organisms that steal chloroplasts from algae, store them in their bodies, and then can rely on photosynthesis for their energy needs: The Costasiella sea slug not only looks like a succulent—it acts like one, too. One of the few animals able to photosynthesize