"Sæfarinn (Ferðin kring um hnöttin neðansjávar)" by Jules Verne is a science fiction adventure novel serialized from March 1869 to June 1870. When ships report sightings of a mysterious sea monster, an American expedition sets out to destroy it. Professor Aronnax, harpooner Ned Land, and servant Conseil find themselves captured aboard the Nautilus, a futuristic submarine commanded by the enigmatic Captain Nemo. Unable to leave, they embark on an extraordinary underwater journey spanning oceanic wonders—and witnessing Nemo's dark quest for vengeance.