Jules Verne gives us the classic tale of undersea adventure aboard the Nautilus . When a sea monster begins attacking ships, the world unites to find and destroy the unknown creature. Monsieur Aronnax joins the fight and is tossed from his boat to find himself aboard an amazing vessel. Aronnax's underwater adventures walking on the ocean floor, pearl diving, and exploring with Captain Nemo has been adapted for young readers in the Calico Illustrated Classics adaptation of Verne's 20,000 Leagues Under the Sea .