<p>Four male narwhals pass along in the open water of Lancaster Sound in Nunavut, Canada.</p>

Four male narwhals pass along in the open water of Lancaster Sound in Nunavut, Canada.

Photograph by Flip Nicklin, Minden Pictures/Nat Geo Image Collection

Narwhal

Common Name:
Narwhal
Scientific Name:
Monodon monoceros
Type:
Mammals
Diet:
Carnivore
Size:
13 to 20 feet
Weight:
1.5 tons
IUCN Red List Status:
Near threatened
Current Population Trend:
Unknown

What is the narwhal?

The narwhal is the unicorn of the sea, a pale-colored porpoise found in Arctic coastal waters and rivers.

Narwhal tusks

These legendary animals have two teeth. In males, the more prominent tooth grows into a swordlike, spiral tusk up to 10 feet long. The ivory tusk tooth grows right through the narwhal's upper lip. Scientists are not certain of the tusk's purpose, but some believe it is prominent in mating rituals, perhaps used to impress females or to battle rival suitors. Females sometimes grow a small tusk of their own, but it does not become as prominent as the male's.

Group travel

Narwhals are related to bottlenose dolphins, belugas, harbor porpoises, and orcas. Like some other porpoises, they travel in groups and feed on fish, shrimp, squid, and other aquatic fare. They are often sighted swimming in groups of 15 to 20, but gatherings of hundreds—or even several thousands—of narwhals have been reported. Sometimes these groups become trapped by shifting pack ice and fall victim to Inuit hunters, polar bears, or walruses.

Inuit people hunt the narwhal for their long tusks and their skin, an important source of vitamin C in the traditional Arctic diet.

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