Why are Narwhals known as the Unicorn of the Sea?
Is a Narwhal's long tusk actually a tooth?\xa0Which animal is the Narwhal a relative of?\xa0\xa0How long can Narwhals stay underwater? For free home activities sign-up at www.WhoSmarted.com\n\nSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.