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Maximum length males 9.5 m, females 7 m; body weight males 8 t., females 4 t.
A striking black and white dolphin with extremely tall and wide dorsal fin, triangular in male and falcate in female. Head with indistinct beak and
conical snout. Body color black dorsally except for oval white patch above
and behind each eye and grey patch behind dorsal fin. Chin and throat areas white continuing to white flank patch to white anal patch. Flippers broad and paddle-shaped with blunt tips. Flukes having concave trailing edge and median notch. Juveniles at birth 2.1-2.4 m long and 180 kg in
weight.