walrus odobenus rosmarus in a mass huddle on the beach off thearctic ocean

aggression aggressive animal archipelago arctic beach bulk change climate close closeup coast congregate conservation detail eco environment exotic extinction fauna field flippered global herds huddle ice mammal marine mass nature northern norway ocean odobenu odobenus off outdoors pinnipeds rosmarus sea social spitsbergen summer survival svalbard thearctic threatened tusks walrus warming whiskers wild wildlife