Narwhals spend their whole lives in Arctic waters, bordering Russia, North America, and Greenland.
Narwhals are not considered an endangered species but certain populations have been heavily hunted. Male narwhals are easy to identify because of their long, ivory tusks. The tusks tend to be covered in algae except for the tip. Adult male and female narwhals are mottled and spotted with gray-green, black, and cream colors. Narwhals are born gray, darken in color and then, starting with the belly, whiten with age.