The narwhal’s famous 'tusk' isn’t actually a tusk.
What is it?

Q: The narwhal’s famous 'tusk' isn’t actually a tusk. What is it?

A tooth — a canine that grows through its upper lip.. Only males typically grow one. It contains millions of nerve endings and may sense water salinity or temperature. Whale unicorn, dental edition.

Question

Accepted Answer

A tooth — a canine that grows through its upper lip. — Only males typically grow one. It contains millions of nerve endings and may sense water salinity or temperature. Whale unicorn, dental edition.