The Sea Raiders sea monsters include Scylla and Charybdis of Greek mythology, and the kraken of medieval times which is thought to have been a giant squid. Previous fictional encounters with giant squids are described in chapter 59 of Herman Melville's "Moby-Dick" of 1851, and in Jules Verne's "Twenty Thousand Leagues Under the Sea" of 1870. The narrator describes a recent period when a new sort of giant squid, a species named "Haploteuthis ferox", became known. (This fictitious name can be compared with the genus name "Architeuthis" of the giant squid.) As a part of the survey of the period, including early encounters
20,000 Leagues Under the Sea: Submarine Voyage (as it was known to the employees) where the "helmsman" stood and controlled the vehicle's operation. The "diving" effect was produced by bubble machines located throughout the attraction, as well as using the waterfalls at the entrance to the show building. Each of the twelve vehicles accommodated a total of forty riders. Vehicles normally cycled through the attraction in packs of three. Despite the extensive 20,000 Leagues Under The Sea overhaul the attraction was given, essentially it was still the same as its Californian counterpart Submarine Voyage, in both its underwater show scenes and narration, except for a few occasional