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Twenty Thousand Leagues Under the Sea
Illustration from Jules Verne's Twenty Thousand Leagues Under the Sea. Captain Nemo observes an octopus through the window of the submarine.
Captain Nemo
fictional character
Captain Nemo, fictional character, the megalomaniacal captain of the submarine Nautilus in Jules Verne’s novel Vingt Mille Lieues sous les mers (1869–70; Twenty Thousand Leagues Under the Sea), and also a character in the subsequent L’Île mystérieuse (1874; The Mysterious Island).