There are all sorts of beautiful creatures in the sea that most people don’t know about. Costasiella kuroshimae, known as leaf sheep, is a type of slug that lives in the sea. Observers think they resemble cartoon sheep because of its flat white face, leafy body, and dark beady eyes. These cartoon sheep only grow to a length of 5 mm and are located off the waters of the Philippines, Indonesia, and Japan.
Costasiella kuroshimae feed on green algae in the sea and produce energy from their food’s chloroplasts through a “kleptoplasty” process. These cartoon sheep are unique because they are the only organisms in the world that are not plants and can still conduct photosynthesis. The sheep can produce enough energy through kleptoplasty to stay alive for a couple of months.
More info: seaslugforum.net