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The Smaller Marine Mammals
Transcript of The Smaller Marine Mammals
(sea lions and fur seals)
Manatee and Dugong
Pinnipeds and the smaller marine mammals
All have back flippers that they can walk on
Phocidea (earless seals)
Can't walk on, but swim with their hind fins
Antarctic Fur Seal
Steller Sea lion
Some characteristics similar to the seals and some to sea lions, can you tell which?
smallest marine mammal
thick, dense fur
slow moving herbivores
sea grass eaters
vulnerable to boat strikes
Alaska once had a sirenia, the extinct Seller Sea Cow
Can be classified as "marine mamals because of their dependence on the sea for food
Vulnerable to sea ice decline
All have swim with their front flippers
All have external ears
Most have larger males than females (sexual dimorphism)
They have no external ears
19 species most of which live in the high latitudes
Fewer examples of sexual dimorphism
they have no external ears
some sexual dimorphism
they can walk on their hind flippers
Hey what's the deal with the tusks?
Completely dependent upon sea ice for feeding
Bodies are highly adapted for swimming, narrow snout, wide but, large paddle feet