Which marine mammal, found primarily in Arctic waters, has the nickname "Unicorn of the Sea"?

The narwhal is the answer. Narwhals are Arctic marine mammals and toothed whales known for a long spiral tusk, cold northern waters, sea ice habitat, and a distinctive appearance that gave them the nickname “Unicorn of the Sea.”

The Arctic Whale Called a Narwhal

Narwhals are toothed whales found primarily in Arctic waters. They live in cold northern regions around areas such as Canada, Greenland, and the Arctic Ocean. Their range and body structure make them strongly associated with sea ice and high-latitude marine environments.

Why It Is Called the Unicorn of the Sea

The narwhal’s famous “horn” is actually an elongated tooth or tusk. It is most often seen in males and can grow into a long spiral shape extending forward from the head. That unusual tusk is the feature that inspired the nickname “Unicorn of the Sea.”

Life Around Sea Ice

Narwhals spend much of their lives in cold Arctic waters where sea ice shapes their movement, feeding, and seasonal behavior. Their habitat is very different from the warmer coastal waters associated with many better-known marine mammals. The combination of Arctic range, whale identity, and spiral tusk makes the narwhal one of the most recognizable animals of the far north.