Polar Bears Essay
Class: Ursidae. 9bPhysical characteristics: Bears have big heads, round ears, small eyes that face forward, very short tails, and stocky legs. They are plantigrade, walking on the heels and soles of their feet like humans do. Each paw has five curved claws that are not retractable, or cannot be pulled back. Habitat: The polar bear habitats encompass the entire Arctic region. Polar bears have adapted to be able to live in the water and on land. Unlike other bear species, the polar bear are excellent swimmers, and have been spotted more than 100 miles away from land or ice. The polar bear habitat is that of the entire Arctic region. Life cycle: Female polar bears reach sexual maturity at about four to five years. Male polar bears reach sexual maturity at about six years. Breeding takes place from March to June on the sea ice, but most occurs during April and May.
During the breeding season, males and females find each other by congregating in the best seal-hunting habitats. Male polar bears have been seen following the tracks of breeding female polar bears for more than 100 km Competition for females is intense. Females breed about once every three years; therefore, there are about three adult males to every breeding female. Before mating, a female polar bear may be accompanied by several males. The males fight fiercely among themselves until the strongest or largest male succeeds in chasing the others away. Dominant males may succeed in mating with several females in a season. Females have babies in the den while hibernating. Polar bears life span is about 15-18 years. Prey: The Polar bear’s main prey is the Arctic seal which is a rich source of high-fat blubber.
They have a very interesting way of catching their prey. A Polar bear would make a breathing hole somewhere in the middle of a vast ice expanse. Seals would often come out of these holes to breath. The Polar bear would patiently lie on its stomach with its mouth near the hole, waiting for any unfortunate seal to appear. This wait could sometimes last for several hours before a Polar bear could have his meal. Polar bears also prey on bearded seals and harp seals. When this prey is difficult to find, Polar bears would attack young walrus, narwhal, fish, seabirds and eggs. Species status: Polar bears were added to the list of threatened species because polar bears are vulnerable to this loss of habitat.
Hunting of polar bears as a food source by certain native people and trade in native handicrafts made from polar bears will also continue. However, importing polar bear products from Canada (where trophy hunting is legal) will be banned. Pollution from man-made kills polar bears also Use for humans past and present- pas was they were hunted for food and fur. Present still hunted but also hunted for trophies but that has been banned Interesting facts: Polar bear cubs learn to freeze and remain still while their mother hunts. If they move, the mother disciples them, with a whack to the head. A polar bear’s fur is not white!! It is hollow. The fur reflects light. The hollow fur also traps the suns heat to help keep the polar bear warm. Known as the king of the artic.
University/College: University of Chicago
Type of paper: Thesis/Dissertation Chapter
Date: 10 January 2017
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