polar bear (Ursus maritimus)
Polar Bear and Cubs by Louis A. Sargent
Author Finn, Frank
Full title The wild beasts of the world / by Frank Finn ; illustrated with 100 reproductions in full colours from drawings by Louis Sargent, Cuthbert E. Swan, and Winifred Austin.
The polar bear (Ursus maritimus) is a carnivorous bear whose native range lies largely within the Arctic Circle, encompassing the Arctic Ocean, its surrounding seas and surrounding land masses. It has evolved to occupy a narrower ecological niche, with many body characteristics adapted for cold temperatures, for moving across snow, ice and open water, and for hunting seals, which make up most of its diet.