Medium-sized blackish-grey seal with large inflatable sac on the head; of Arctic and northern Atlantic waters WordNet 3.0 & Open English WordNet

The hooded seal is a large phocid found only in the central and western North Atlantic, ranging from Svalbard in the east to the Gulf of St. Lawrence in the west. The seals are typically silver-grey or white in color, with black spots that vary in size covering most of the body. Wikipedia