13D Flashcards
Family odobenidae
1) competition (walruses)
2) Defense (predators)
3) Hauling out (pick axe)
4) Resting (anchor)
Order Sirenia
paddle shaped tail, freshwater/estuarine
fluke shaped tail, marine; has tusks
Sirenians
mammals belonging to order sirenia
Tail Flukes
are the lobes of sirenian or cetacean tail
Family Dugongidae
dugong
steelers sea cow
Cetaceans
marine mammals belonging to order cetacea; includes whales, dolphins, and porpoises
Blowhole
opening of the tip of cetaceans that contains the nostrils
Blubber
thick’s uniform layer of fat under the skin of some marine mammals (pinnipeds, sirenians, cetaceans)
Alveoli
tiny spaces, or gas sacs, within the lungs where gas exchange occurs
The Bends
nitrogen gas dissolved in the blood comes out of solution and forms gas bubbles as the pressure decreases during an ascent from deep water, causing disruptions in circulation
Myoglobin
protein muscle that store’s oxygen
Lactic Acid
waste product produced when ? lose anaerobically
Spy Hopping
cetacean behavior in which the animal raises its head out of the water
Breaching
cetacean behavior in which an animal completely or almost completely leaves the water
Tail slapping
cetacean behavior in which animals lift its tail out of the water and slaps it down hard on the surface
Peduncle
part of the whales body closest to the tail fluke