Scuba diver Yusuke Fukami snapped this photo in December. It shows a sea slug often called a leaf sheep. Despite its nickname, this critter is neither a leaf nor a sheep. It’s a mollusk, a type of animal with a soft body, that’s found mainly in ocean waters in Southeast Asia. These slugs have more in common with sheep than what look like fluffy bodies and floppy ears. They also munch on algae the way sheep graze on grass. But leaf sheep are much smaller. They’re less than half an inch long!