Dall's Porpoise

This porpoise is the fastest swimmer of all cetaceans, having very slippery skin and a muscular tail. This species is found only in the North Pacific, travelling in herds of 10 to 20. It is named after the American scientist, William Healey Dall, who studied it 125 years ago. The Dall's Porpoise is stock, growing to a length of 7 ft. and weighing in at 480 lb. It is black, with a white patch on its belly.