Indo-Pacific Humpback Dolphin

The Indo-Pacific humpback dolphin inhabits coastal waters of the eastern Indian and western Pacific Oceans, and is often called the Chinese white dolphin in mainland China, Macau, Hong Kong, Singapore and Taiwan. Adults are 2–3.5 m long and weigh 150–230 kg, and calves are about 1 m at birth, dark grey or black. Adults are grey, white or pink, the pink coming from blood vessels developed for thermoregulation rather than pigment. Females mature at about ten years and males at about 13, and animals live up to 40 years (Wikipedia, general species account).

Some biologists regard it as a subspecies of the Indian Ocean humpback dolphin, which ranges from East Africa to India, and several issues in telling the two types apart remain unresolved. It lives in small groups, generally fewer than ten animals, hunting as a group with echolocation.