This carved bow, much enlarged in this view, is made of walrus ivory. It gives us a view into how the Inuit lived. Walrus tusk was only one of three sources of ivory available in the Arctic. The Narwhal, a small whale often called the "Unicorn of the Sea" has a single, white, spiral ivory tusk which was exploited. The tusks of mammoths frozen ten centuries ago are also exploited as they are released sporadically from the Arctic ice cap.