Dark Waters (Once Upon a Time) is to take Snow's heart. The Land of Untold Stories is revealed to be the Mysterious Island from the book as the same name. The "Nautilus" is based on the submarine from "Twenty Thousand Leagues Under the Sea". Captain Nemo based on the protagonist from Jules Verne's novel "Twenty Thousand Leagues Under the Sea". Hook refers to the giant squid that attacks him as a kraken. The kraken is a legendary sea monster of giant size that is said to dwell off the coasts of Norway and Greenland. The episode posted its lowest numbers so far in the series, as
Twenty Thousand Leagues Under the Sea he sees him one last time (although secretly), and hears him say "Almighty God! Enough! Enough!". Aronnax immediately goes to his companions and they are ready to escape. But while they loosen the dinghy, they discover that the "Nautilus" has wandered into the Moskenstraumen, more commonly known as the "Maelstrom". They manage to escape and find refuge on a nearby island off the coast of Norway, but the fate of the "Nautilus" is unknown. Captain Nemo's name is an allusion to Homer's "Odyssey", a Greek epic poem. In "The Odyssey", Odysseus meets the monstrous cyclops Polyphemus during the course of