Polar bear the fourhorn sculpin. With the exception of pregnant females, polar bears are active year-round, although they have a vestigial hibernation induction trigger in their blood. Unlike brown and black bears, polar bears are capable of fasting for up to several months during late summer and early fall, when they cannot hunt for seals because the sea is unfrozen. When sea ice is unavailable during summer and early autumn, some populations live off fat reserves for months at a time, as polar bears do not 'hibernate' any time of the year. Being both curious animals and scavengers, polar bears investigate and
Siku (polar bear) twenty-four hours and he was hailed internationally as an online sensation, especially after appearing on the official BBC website. Siku was born on 22 November 2011 at Skandinavisk Dyrepark ("Scandinavian Wildlife Park") in Djursland, Denmark. His name means "sea ice" in the Inuit language Iñupiaq. According to the Scandinavian Wildlife Park, The name is symbolic because the polar bears are 100% dependent on sea ice for their survival. Polar bears catch all their prey from the sea ice, so no sea ice – no polar bears. Due to global warming, the sea ice in the Arctic Sea is rapidly diminishing,