Adult male polar bear (Ursus maritimus) on multi-year ice floes in Franz Josef Land, Russia, Arctic Ocean, Eurasia

polar bear adult male ursus maritimus arctic ocean ice floes wildlife northern habitat arctic environment natural behavior snow ice frozen landscape marine mammal arctic ecosystem cold climate predator exploring walking animal movement pristine habitat icy waters biodiversity conservation arctic wildlife animal tracking ecological balance ice melting earth's climate white fur solitary animal arctic journey marine biology frozen habitat survival nature habitat loss animal behavior arctic tundra natural setting seasonal changes polar ecosystems ice habitat nutritional habits bear population geographical location animal adaptation climate change biodiversity hotspot ursidae freezing temperatures