Name: Leaf sheep, or leaf slug (Costasiella kuroshimae)

Where it lives: Shallow waters across Asia and the Coral Triangle

What it eats: Algae

Why it's awesome: These tiny marine creatures are probably better known by their nickname, "Shaun the Sheep" sea slugs, because of their uncanny resemblance to the iconic TV character.

The adorable critters have white faces, small black eyes and two "ears." These structures are special organs called rhinophores covered in tiny hairs that help the leaf sheep sense chemicals in the water and find food. Their tiny bodies are covered with green structures called cerata, which look like leaves and give them a larger surface area for gas exchange.

Growing to 0.3 inches (8 millimeters) long, leaf sheep were first discovered off Kuroshima Island, Japan, in 1993. They have also been recorded in the Philippines, Indonesia, Singapore and Thailand. Shaun the Sheep sea slugs are found in shallow waters near coral reefs. They live on algae, which also provides them with food.