Polar Bear.The polar bears, which a

Polar Bear.
The polar bears, which are usually called white bears, are found on the sea ice of the Arctic Circle throughout the North Polar basin. They are classified as Ursus maritimus. They live for about 25 to 30 years.They are now endangered because of habitat destruction.

Polar bears have white fur which may yellow in the summer. Their bodies are longer than other bears and streamlined for aquatic life. The females grow up to 1.8 m (6 ft) long; males grow up to 2 m (7 ft) long. Most male polar bears weigh an average of about 350 kg (about 880 lb), and most females weigh about 250 kg (550 lb). They have the plantigrade feet (heel and sole touching the ground, with five sharp, curved claws on each foot for grasping the ice and holding its prey. Long hair between the pads protects the bear's feet from the cold and provides grip on the ice. Stiff hairs on the forelegs, and very broad front feet, help the bear swim.

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Polar Bear.
Beruang kutub, yang biasanya disebut beruang putih, ditemukan di es laut dari Lingkaran Kutub Utara seluruh cekungan Kutub Utara. Mereka diklasifikasikan sebagai Ursus maritimus. Mereka hidup selama sekitar 25 sampai 30 years.They sekarang terancam karena perusakan habitat. Beruang kutub memiliki bulu putih yang mungkin kuning di musim panas. Tubuh mereka lebih panjang dari beruang lain dan efisien untuk kehidupan akuatik. Betina tumbuh hingga 1,8 m (6 ft) panjang; laki-laki tumbuh hingga 2 m (7 kaki) panjang. Kebanyakan beruang kutub jantan berat rata-rata sekitar 350 kg (sekitar £ 880), dan berat sekitar 250 wanita paling kg (£ 550). Mereka memiliki kaki plantigrade (tumit dan telapak menyentuh tanah, dengan lima tajam, melengkung cakar pada setiap kaki untuk menggenggam es dan memegang mangsanya. Rambut panjang antara bantalan melindungi kaki beruang dari dingin dan memberikan pegangan di atas es. kaku rambut di kaki depan, dan kaki depan yang sangat luas, membantu beruang berenang.