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Porpoises - English
URL: http://www.press.jhu.edu/books/walkers_mammals_of_the_world/cetacea/cetacea.phoc

This family of four Recent genera and six species is found in the North Pacific Ocean and adjoining seas, in coastal waters on both sides of the North Atlantic and around South America, in the Black Sea, off southern Asia and the East Indies, and around certain sub-antarctic islands.

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Phocoenidae Family - English
URL: http://animaldiversity.ummz.umich.edu/chordata/mammalia/cetacea/phocoenidae.html

Phoecoenids include 6 species placed in 4 genera. They are found in the coastal waters of all oceans and seas of the northern hemisphere; along the coast of most of South America; and in some areas of southeastern Asia. They are also known from a few Asian rivers.

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Management of dolphins and porpoises - English
URL: http://www.mofa.go.jp/policy/economy/fishery/whales/iwc/dolphin.html

World-wide, there are at least 68 species of small cetaceans commonly known as dolphins and porpoises. Some nations have proposed that the IWC assume authority for their conservation and management.

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Dolphins and Porpoises Delphinidae and Phocoenidae Information Page - English
URL: http://www.everythingdolphins.com/DolphinInfo.htm

Dolphins and porpoises are cetaceans, which are animals in the whale family. Dolphins and porpoises are considered to be small whales. All dolphins and porpoises are toothed whales, or odontocetes. However, dolphins and porpoises differ in the type of teeth they have. Dolphins have sharp teeth, while porpoises have teeth that are spade or shovel shaped. In fact, scientists generally use tooth shape as a way of classifying dolphins and porpoises. Dolphins also tend to have a pointy mouth or "beak" and a curved dorsal fin, but not always.

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Porpoises - English
URL: http://www.press.jhu.edu/books/walker/cetacea/cetacea.phocoenidae.html

These are relatively small cetaceans, with a head and body length of about 120-220 cm and a normal weight range of 25-125 kg. They share many characters with the Delphinidae, but as noted in the account of that group, porpoises have a blunt snout and a rather stocky body form.

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