Sea slugs, like a lamb
This is a sheep! It's a cow! No, it Costasiella kuroshimae. This charming sea slug, whose beady eyes and ears of receptors make it look like a cartoon sheep, feeds on algae. And it is the only living thing in the world, capable of photosynthesis.
Slug grows to 5 mm in length and dwells in waters of Japan, Indonesia and Philippines.
Eating algae, slug sucks chloroplasts and include them in their internal organs. This process is, in essence, makes the slugs with solar panels!