A rare sighting of an adult blue whale (Balaenoptera musculus) sub-surface feeding in the Svalbard Archipelago, Norway

blue whale balaenoptera musculus svalbard norway arctic waters marine life cetacean watching wildlife ocean feeding behavior rare sighting natural habitat calm tail dorsal fin conservation aquatic ecosystem biodiversity biology environmental awareness region oceanic creatures underwater activity cruising serene landscape tranquil nature open environment observation fins mammals sea breach technique summer