Dall's Porpoise (Phocoenoides dalli): 
Kingdom: Animalia Phylum: Chordata (vertebrates) Class: Mammalia (mammals) Order: Cetacea Family: Phocoenidae Genus: Phocoenoides Species: dalli Small and sleek, the Dall's Porpoise is a member of the family Phocoenidae, which is composed of the world's smallest cetaceans. Reaching a length of only 6-8ft, and a weight of about 400lbs, the Dall's porpoise is often described as "stocky" in build. Nevertheless, it has made a name for itself for being the "cheetah" of the ocean, being able to reach speeds of 35mph. Originally, two species of the Dall's where recorded, Dall's porpoise and True's porpoise, according to the distinct markings their bare. Four types of makings are recognized: That which is called Dall's porpoise is jet black with no markings, jet black with striped bodies, or with white lateral patch below and posterior of the dorsal fin. The True's version is with white lateral patch from the flippers to the mid-peducle region. 
The Dall's Porpoise makes an unmistakable "rooster tail" as he rushes through the water at high speeds. The Dall's Porpoise's diet consists of small squid, capelin, Pacific hake, mackerel and herring, to name a few. It is thought, although unknown, that the dall's porpoise dives relatively deep, as many deep ocean species have been found in their stomachs. Like other toothed cetaceans, the dall's porpoise used echolocation in their feeding and navigation. |