Hump of Indo-Pacific Humpback Dolphin (IMAGE) Wildlife Conservation Society Caption Occurring in mostly coastal habitats stretching from the western Indian Ocean to Australian waters, the Indo-Pacific humpback dolphin gets its name from the distinctive hump just below the marine mammal’s dorsal fin (as in this individual animal from the coast of northwest Madagascar. Photo credit: Credit © Martin Mendez Usage Restrictions One time usage only. Must use the following credit: (c) Martin Mendez License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.