20000 Leagues Under The Sea

Twenty Thousand Leagues Under the Sea is a classic science fiction novel by French writer Jules Verne. It was first published in French as Vingt Mille Lieues sous les mers in 1869-70. It is perhaps the most popular book of his science-fiction series Voyages extraordinaires (1863-1910). It tells the story of Captain Nemo and his submarine Nautilus as seen from the perspective of Professor Pierre Aronnax.

Professor Pierre Aronnax, the narrator of the story, boards an American frigate commissioned to investigate a rash of attacks on international shipping by what is thought to be an amphibious monster. The supposed sea creature, which is actually the submarine Nautilus, sinks Aronnax's vessel and imprisons him along with his devoted servant Conseil and Ned Land, a temperamental harpooner.

The survivors meet Captain Nemo, an enigmatic misanthrope who leads them on a worldwide, yearlong underwater adventure. The novel is noted for its exotic situations, the technological innovations it describes, and the tense interplay of the three captives and Nemo (who reappears in The Mysterious Island).