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POLAR BEARS
Presented By: Youstena Zaki and Diana Hanna
Order: Carnivora
Family: Ursidae
Genus: Ursus Maritimus
2007, Jenny E. Ross
Physical Characteristics Weight 550-1700 lbs for
adult males, and 200-700 Ibs for adult females.
Have small heads. Good sense of smell to
detect prey. Five-toed paws, helps
move around. White thick coat which. They have two layers of
hair.2008, beingmyself
Habitat and Distribution Arctic sea ice, water, islands. Alaska,
Canada, Russia, Greenland, Norway. Land masses around the edge of the polar
basin. Polar bears migrate seasonally, staying with
the movement of ice.
2008, fruchtzwerg's world
Adaptation Strong swimmers. Long bodies allows
with fat under their skin allows them to float in the water.
The thick layer of fur, keep them insulated.
2011, Maia C.
Longevity of polar bears
Live 20-30 yrs. No predators, but other old bears. Cubs can be killed by wolves. Newborn-Cannibalized by malnourished
parents. Some bears die of starvation.
2010, USFWSAlaska
Diet and Eating Habits Mainly ringed and bearded
seals. Harp seals, walrus, whales. If no food is available they
eat what they find. They need an average of 2
Kg of fat per day. “Still Hunting.” -They
remain still waiting for the seals to come to surface and as they come up the bears attack the head. This method takes about an hour.
2009, cyrusbulsara
2010, Maia C.
Hunting & Environment Threats Hunted for food,
clothing. Hunting is regulated by
the government in US, Canada, and Greenland.
Climate change-decrease in temperature.
Oil spills damages fur-no insulation.
PCB and DDT.
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