A grampus also known as Risso’s dolphin, is grey in color with a white under belly and white scratch-like markings. The head is bulbous with a blunt nose. It has a tall curved dorsal fin almost like a shark fin. It is a cetacean of the dolphin family which means it is a carnivorous, aquatic, mammal, unable to survive on land.
The word itself means fat fish and has also been used as another word for orca.