The National Marine Mammal Laboratory's introduction to whales, dolphins
and porpoises; seals, sea lions, and walruses; manatees and dugongs;
and other marine mammals.
Scroll down a little for an in-depth look at marine mammals--their characteristics,
adaptations to life in the water, migration and distribution, and more--from
the United States Navy, Office of Naval Research.
Characteristics, adaptation, migration and distribution of marine
mammals, with additional information on popular marine species, from
the United States Office of Naval Research.
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September 9, 2008