The giant moray is a species of moray eel and a species of marine fish in the family Muraenidae. In terms of body mass, it is the largest moray eel; however, the slender giant moray is the largest in terms of body length.
As the name suggests, the giant moray is a large eel, reaching up to 3 m in length and 30 kg in weight. Its elongated body is brownish in color. While juveniles are tan in color with large black spots, adults have black specks that grade into leopard-like spots behind the head.