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, this tiny invertebrate (also known as the leaf slug or leaf sheep) acquires chloroplasts by munching on Avrainvillea, a paddle-shaped seaweed with a velvety texture. It then stores those chloroplasts in its own body, which enables the slug to soak up sunlight and transform it into energy—a process that also gives the mollusk its green color.

The chloroplasts are stored in the horn-shaped structures called cerata located on the slugs’ backs. Cerata evolved to increase the surface area of these animals for use in respiration and surface area is very helpful if you run on solar panels.

And they’re also cute as a button! I mean, look at these things:

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