They are of a mottled white color with a darker head and a dark stripe that runs down the back. The males have a large tusk that can measure up to 2.5 m (8.2 ft) in length. The tusk is a canine tooth (most commonly the left one of the upper jaw) that projects through the lip and forms a left-handed spiral.
They break through the ice with their tusk.
Killer whales, Greenland sharks and polar bears.
They are known to follow the distribution of the pack ice.
Social system/Group size
Most commonly seen in groups of 2 - 10, but they may occasionally form larger groups of up to hundreds.
They are traditionally hunted by mostly natives, but also for their tusks. Climate change and pollution are other known threats to the Narwhal.
They are also known as moon whale, polar whale or unicorn whale.