An arctic cetacean (Monodon monocerous), about twenty feet long. The male usually has one long, twisted, pointed canine tooth, or tusk, projecting forward from the upper jaw like a horn, whence it is called also sea unicorn, unicorn fish, and unicorn whale. Sometimes two horns are developed, side by side.

nar-wayl A small Arctic whale, Monodon monoceros, the male of which has a long straight spirally twisted tusk developed from one of its teeth.

small arctic whale the male having a long spiral ivory tusk

a kind of whale

an endangered whale that lives in Arctic waters

a small whale, and it is a very characteristically arctic whale

a vicious whale of immense size with a long horn, so sinking ships isn't out of the question

4-20 Many pods may travel and feed together. They may group with belugas.

The narwhal is a toothed whale from the Arctic. The males have a large, spiral tooth.

The narwhal (Monodon monoceros) is an Arctic species of cetacean. It is a creature rarely found south of latitude 70°N. It is one of two species of whale in the Monodontidae family (the other is the beluga whale).