After several years of production, design and location shooting, Walt Disney released his first Hollywood produced live-action motion picture in 1954. If the advertising was to be believed, it was in fact the mightiest motion picture of them all. Considering that the film was 20,000 Leagues Under the Sea, this is a credible claim.
20,000 Leagues Under the Sea, starring James Mason as Nemo and Kirk Douglas as Ned Land alongside Peter Lorre as Conseil and Paul Lukas as Prof. Arronax, is perhaps the single most important modern film in the genre of Scientific Romance. 20,000 Leagues came to the silver screen in a post-Hiroshima, pre-Sputnik era when Atomic Age Science Fiction was the darling of young and old imaginations alike (not to mention drive-in theatre patrons). Between voyaging to forbidden planets and fighting off prehistoric monsters, filmmakers turned their attention back to the Scientific Romances of H.G. Wells and Jules Verne. The first of these was George Pal's War of the Worlds, which updated Wells' tale by placing it squarely in the modern day.
Following Treasure Island and a series of three Mediaeval historical dramas shot in England with money tied up during the Second World War, Disney sought another live-action project for production in his studios in Burbank. In doing so, he revived his childhood love for Jules Verne. His concerns, in making the film, were very much the stuff of adulthood, however.