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 Washington Square Press. Many of Mercier's changes were addressed in the translator's preface, and most of Verne's text was restored. In the 1960s, Anthony Bonner published a translation of the novel for Bantam Classics. A specially written introduction by Ray Bradbury, comparing Captain Nemo and Captain Ahab of "Moby-Dick", was also included. Many of Mercier's errors were again corrected in a from-the-ground-up re-examination of the sources and an entirely new translation by Walter James Miller and Frederick Paul Walter, published in 1993 by Naval Institute Press in a "completely restored and annotated edition". It was based on Walter's own 1991