"Dorsal" means "top", like where the dorsal fin on a fish is. http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=dorsal http://www.google.com/search?sourc

"Dorsal" means "top", like where the dorsal fin on a fish is. http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=dorsal http://www.google.com/search?sourceid=chrome&ie=UTF-8&#3... e.g. "of, pertaining to, or situated at the back, or dorsum." Seems fish are the oddball, in a way. Their top is basically their back.