Order Carnivora Order Sirenia Polar bears and sea otters Manatees and dugongs

Classification Kingdom Animalia Kingdom Animalia Phylum Chordata Phylum Chordata –Subphylum Vertebrata Class Mammalia Class Mammalia Order Carnivora/Order Sirenia Order Carnivora/Order Sirenia

Are sea otters and polar bears the only organisms in Order Carnivora? A. Yes, it is a small order B. No, there are other marine and terrestrial species C. No, they are the only marine representatives but there are lots of terrestrial representatives D. Polar bears are super cute

Order Carnivora – sea otters Smallest marine mammal Smallest marine mammal No blubber – rely insulation trapped air No blubber – rely insulation trapped air Most of time in water Most of time in water –Including breeding and giving birth

Order Carnivora – sea otters Live in kelp beds Live in kelp beds NorthWest Coast of America NorthWest Coast of America Coast Russia/Siberia Coast Russia/Siberia Use kelp for protection/rest Use kelp for protection/rest

Order Carnivora – sea otters Eat sea urchins, bivalves, crustaceans, invertebrates Eat sea urchins, bivalves, crustaceans, invertebrates Huge role in keeping kelp forest ecosystem healthy Huge role in keeping kelp forest ecosystem healthy Keep sea urchin population down – keep kelp population normal Keep sea urchin population down – keep kelp population normal Can dive to 60 m Can dive to 60 m

Order Carnivora – sea otters Population crashed in early 1900’s, Population crashed in early 1900’s, Slowly rebuilt Slowly rebuilt Now declining again Now declining again Listed as threatened Listed as threatened

Is a sea otter oviparous or viviparous? A. viviparous B. oviparous C. neither D. both

What Phylum do sea otters belong to? A. Chordata B. Vertebrata C. Mammalia D. Mollusca

What subphylum do sea otters belong to? A. Chordata B. Vertebrata C. Mammalia D. Mollusca

Order Carnivora – polar bears Skin is black Skin is black Fur is hollow Fur is hollow –Both allow heat to be trapped

Order Carnivora – polar bears Semiaquatic Semiaquatic Spend ½ time on drift ice Spend ½ time on drift ice Out of water to breed, give birth, rest Out of water to breed, give birth, rest Live in Arctic (polar circle) Live in Arctic (polar circle)

Order Carnivora – polar bears Feed primarily on seals Feed primarily on seals Strong swimmers Strong swimmers Hunting done in water or on ice Hunting done in water or on ice

Order Carnivora – polar bears Listed as endangered Listed as endangered Melting ice/global climate change huge threat to population Melting ice/global climate change huge threat to population

Why do polar bears not eat penguins? A. Polar bears live in the arctic and penguins live in the antarctic B. Polar bears live in the antarctic and penguins live in the artic C. Polar bears are too slow to catch penguins D. Penguins taste funny

Order Sirenia Manatees and dugongs Manatees and dugongs Relative of elephants Relative of elephants Front flippers but no rear limbs Front flippers but no rear limbs Paddle shaped tail Paddle shaped tail Lots of blubber! Lots of blubber!

Order Sirenia Large size (up to 5 m ) Large size (up to 5 m ) Strict vegetarians – eat sea grass Strict vegetarians – eat sea grass Slow moving Slow moving Not aggressive Not aggressive

Order Sirenia Slow reproduction Slow reproduction Only 4 species Only 4 species Found in Carribean, West Africa, southern US Found in Carribean, West Africa, southern US All are endangered All are endangered

Order Sirenia Boat traffic is huge problem now Boat traffic is huge problem now Used to be hunted Used to be hunted