An adult polar bear (Ursus maritimus) traveling from ice floe to ice floe in the Svalbard Archipelago, Norway, Arctic, Europe

Brown bear, alaska. Brooks falls. Ursus arctos. Bear catching leaping sockeye salmon during the summer at a waterfall

Female Polar Bear (Ursus maritimus) accompanied by two cubs, hungry and curious, walking on melting pack ice in the early morning sun. South of Nordaustlandet, Svalbard Archipelago, High Norwegian Arctic

Polar Bear (Ursus Maritimus) mother with three cubs feeding on the remains of a walrus skin. WilhelmØya, Svalbard.

Grizzly Bear

Black bear (Ursus americanus), mother suckling two young, captive

Black bear (Ursus americanus), mother suckling two young, captive

Kermode Bear (Ursus americanus kermodei), also known as the Spirit Bear, fishing in a stream in the Great Bear Rainforest, Hartley Bay, British Columbia, Canada

Bear (Ursus arctos) viewing at Hallo Bay Camp. A sow and her two cubs hunt for clams while awaiting the arrival of salmon to local streams; Alaska, United States of America

A brown bear (Ursus arctos) is staring with its mouth open at a salmon it's about to catch at Brooks Falls. The fish is only a few inches away from its mouth. Shot with a Nikon D800 in Alaska; Kodiak, Alaska, United States of America

Bear (Ursus arctos) viewing at Hallo Bay Camp. A sow and her two cubs hunt for clams while awaiting the arrival of salmon to local streams; Alaska, United States of America

Grizzly bear (Ursus Arctos Horribilis) wading in water looking for fish, Khutzeeymateen Grizzly Sanctuary; British Columbia, Canada

Bear (Ursus arctos) viewing at Hallo Bay Camp. A sow and her two cubs hunt for clams while awaiting the arrival of salmon to local streams; Alaska, United States of America

A brown bear (Ursus arctos) about to catch a salmon in its mouth at the top of Brooks Falls, Alaska. The fish is only a few inches away from its gaping jaws. Shot with a Nikon D800 in Alaska; Kodiak, Alaska, United States of America

Bear (Ursus arctos) viewing at Hallo Bay Camp. A sow and her two cubs hunt for clams while awaiting the arrival of salmon to local streams; Alaska, United States of America

Portrait of a black bear (Ursus americanus) pausing on a mountainside from feeding on lowbush cranberries and looking at the camera on a mid-October afternoon in Southcentral Alaska's Chugach Mountains, Alaska, United States of America

A Brown Bear (ursus arctos) about to catch a salmon in it's mouth at the top of Brooks Falls, Alaska. The fish is only a few inches away from its gaping jaws. Shot with a Nikon D800 in July 2015, Alaska, United States of America

A Brown bear (Ursus arctos) fishes during the summer salmon runs in the Russian River near Cooper Landing, South-central Alaska, Alaska, United States of America