Risso's Dolphin

Risso's dolphin is the only species of the genus Grampus in the dolphin family (Delphinidae). Its closest relatives include the pilot whales, the pygmy killer whale, the melon-headed whale and the false killer whale (Wikipedia, general species account).

It prefers deep water beyond the continental shelf and steep bottom slopes, where groups of 8 to 50 animals are commonly seen travelling or bow-riding. It is sometimes seen in association with other dolphins, such as Fraser's dolphin. The cached account is limited, so this entry is restricted to identification and general range.