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
The Mysterious Island (1929 film) article included stills showing the original 1926 undersea denizens and the redesigned version which actually appeared in the film. Footage directed by Maurice Tourneur and Benjamin Christensen in 1927 was incorporated into the final 1929 version. The film is loosely based on the back-story given for Captain Nemo in the novel "The Mysterious Island", and might more properly be thought of as a prequel to "Twenty Thousand Leagues Under the Sea". It is the story of Count Dakkar (Captain Nemo's real name is revealed to be Prince Dakkar in "The Mysterious Island"), how he built his submarine, how he was