Physical Description
Most photographs of Burmeister's Porpoises are taken of dead specimens and show the animal to be coloured black. This phenomenon gave rise to the earlier common name, the Black Porpoise. However live individuals are typically a dark grey color. They turn black in just a few minutes after death. The underside varies in colour but is usually a lighter grey. Burmeister's are about 150 cm long when fully mature and weigh 50–75 kg. The maximum recorded weight is that of a female at 105 kg. They have a shallow indentation at their blowhole set just in front of the eyes. The shape and placement of the dorsal fin is unusual for a cetacean—it is triangular rather than curved and points backwards more than upwards. It is located about three quarters of the way along the back—further back than any other dolphin or porpoise. These features are sufficient to distinguish the porpoise from the similar-sized Chilean Dolphin which is found in the porpoise's Pacific range.
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