Narwhal The tusks were staples of the cabinet of curiosities. European knowledge of the tusk's origin developed gradually during the Age of Exploration, as explorers and naturalists began to visit Arctic regions themselves. The narwhal was one of two possible explanations of the giant sea phenomenon written by Jules Verne in his 1870 novel "Twenty Thousand Leagues Under the Sea". Verne thought that it would be unlikely that there was such a gigantic narwhal in existence. The size of the narwhal, or "unicorn of the sea", as found by Verne, would have been . For the narwhal to have caused the
Twenty Thousand Leagues Under the Sea like D'Urville's ship, the "Astrolabe"; and she passes through an underwater tunnel from the Red Sea into the Mediterranean. The most famous part of the novel, the battle against a school of giant squid, begins when a crewman opens the hatch of the boat and gets caught by one of the monsters. As the tentacle that has grabbed him pulls him away, he yells "Help!" in French. At the beginning of the next chapter, concerning the battle, Aronnax states, "To convey such sights, one would take the pen of our most famous poet, Victor Hugo, author of "The Toilers of