NOAA
Noaa: Nmml: What Is Marine Mammal Science?
Besides career information about marine biology, site includes information about studying marine mammals and the National Marine Mammals Laboratory. Check out the marine mammal section then test what you learn with the marine mammal quiz.
Other
Vancouver Aquarium/career as a Marine Biologist
Practical information about becoming a marine biologist. Site includes brief interviews with two professionals. Has listing of Canadian colleges with degrees in marine biology.