The
cetacean family
Monodontidae comprises two unusual
whale species, the
narwhal, in which the male has a long tusk, and the dorsal fin-lacking, pure white
beluga whale. They are native to coastal regions and pack ice around the
Arctic Sea. Belugas can be found in the far north of the
Atlantic and
Pacific Oceans; the distribution of narwhals is restricted to the Arctic and Atlantic Oceans.