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
Science fiction accuracy, especially "Twenty Thousand Leagues Under the Sea" (1870) which predicted the modern nuclear submarine. In 1887 the novel "El anacronópete" by Spanish author Enrique Gaspar y Rimbau introduced the first time machine. Many critics consider H. G. Wells one of science fiction's most important authors, or even "the Shakespeare of science fiction”. His most notable science fiction works include "The Time Machine" (1895), "The Island of Doctor Moreau" (1896), "The Invisible Man" (1897), and "The War of the Worlds" (1898). His science fiction imagined time travel, alien invasion, invisibility, and biological engineering. In his non-fiction futurologist works he predicted