Marine mammals are mammals that are well adapted for life in the marine environment. Two major groups of marine mammals are:
There are approximately 125 marine mammal species worldwide managed under the MMPA. Of those 125, 8 species are under the jurisdiction of the U.S. Fish and Wildlife Service (walrus, polar bear, sea otter, marine otter, West African manatee, Amazonian manatee, West Indian manatee, and dugong).
Status of Marine Mammals
Marine mammals of the Salish Sea, compiled by Albert Shepard