Princeton University
Mammals of North America: Dolphins and Porpoises
From the pages of "Mammals of North America," a field guide published by Princeton University Press, this website offers general descriptions of striped, blunt-nosed dolphins and porpoises. Detailed pictures and maps of habitat range are...
Other
Fishin for Facts Library
A comprehensive site that includes a wealth of information on whales, sharks, penguins and squid.
Smithsonian Institution
National Museum of Natural History: American Mammals: Harbor Porpoise
Large numbers of harbor porpoises are caught in fishing nets, because the porpoises feed on schooling fish such as herring and mackerel, in relatively shallow coastal waters. They are also affected by increasing pollution in coastal...