How long is a narwhal's tusk?
The narwhal is the unicorn of the sea, a pale-colored porpoise found in Arctic coastal waters and rivers. These legendary animals have two teeth. In males, the more prominent tooth grows into a swordlike, spiral tusk up to 8.8 feet long. The ivory tusk tooth grows through the narwhal's upper lip.
Join Alexa Answers
Help make Alexa smarter and share your knowledge with the worldLEARN MORE