Twenty Thousand Leagues Under the Sea of the premiere adventure novels and one of Verne's greatest works, along with "Around the World in Eighty Days" and "Journey to the Center of the Earth". The description of Nemo's ship, the "Nautilus", was considered ahead of its time, as it accurately describes features on submarines, which at the time were very primitive vessels. A model of the French submarine "Plongeur" (launched in 1863) was displayed at the 1867 Exposition Universelle, where it was studied by Jules Verne, who used it as an inspiration for the novel. The title refers to the "distance traveled" while under the sea and
Jules Verne Denmark to return in haste to Paris, but missed the birth on 3 August 1861 of his only biological son, Michel. Meanwhile, Verne continued work on the idea of a "Roman de la Science", which he developed in a rough draft inspired, according to his recollections, by his "love for maps and the great explorers of the world". It took shape as a story of travel across Africa and would eventually become his first published novel, "Five Weeks in a Balloon". In 1862, through their mutual acquaintance Alfred de Bréhat, Verne came into contact with the publisher Pierre-Jules Hetzel, and