Adult brown bear (Ursus arctos) feeding on humpback whale carcass in Glacier Bay National Park, Alaska, United States of America

brown bear ursus arctos humpback whale carcass glacier bay alaska wildlife feeding ecology national park marine life behavior nature animal interaction natural habitat alaskan wilderness preservation biodiversity coastal ocean scavenging predator ecosystem summer foraging carnivore aquatic diet mammal resources conservation food chain observation visitor experience tourist attraction encounter native species