Narwhal  (Monodon monoceros)

The narwhal occurs patchily throughout Arctic waters and in the north Atlantic Ocean. The highest narwhal density is found in the eastern Canadian Arctic Ocean and Greenland. It is also found in the waters of Iceland, Svalbard in Norway, Alaska (US), and Russia (3).

Although traditionally thought of as deep-water cetaceans, narwhals actually forage at all depths, remaining close to the pack ice of the Arctic Ocean (3).