The Australian humpback dolphin (Sousa sahulensis) was recently described as a separate species. Australian humpbacks lack the hump present in other species of Sousa and their dorsal fin is low and triangular. Newborn calves are about 1m in length and grow to around 2.7m. Australian humpbacks are mostly grey with a lighter belly, separated by a diagonal ‘cape’ with indistinct margins. Young calves are darker than adults, and the beak, forehead and dorsal fin whiten with age. The beak is long and cylindrical, containing about 31 to 33 teeth in each row. The tail is large and the flippers are short and rounded.
Project note: Temporary content migrated from http://www.ehp.qld.gov.au/wildlife/animals-az/indopacific_humpback_dolphin.html