Indo-Pacific Hump-backed Dolphin

The Indo-Pacific Hump-backed Dolphin (Sousa chinensis) is a species of dolphin which can be found throughout Southeast Asia, and they breed from South Africa to Australia. They have a distinctive surfacing behaviour, rising at an angle of 30-45 degrees.

There are two subspecies, with Sumatra, one of the Indonesia islands, as the dividing line between the Chinese race, Chinese White Dolphin S. c. chinensis, and the western subspecies S. c. plumbea, which is sometimes split as a separate species.

The two subspecies differ in colour, and the size of their dorsal fin. The ones found in Southeast Asia have pinkish white skin and have larger dorsal fins, but they lack the fatty humps of their South African and Australian counterparts. Adult Indo-Pacific dolphins can be 2-3 metres in length.