Clare Hamilton, who plays Mary Skelton, was the sister of Maureen O' Hara. This would be her one and only screen appearance.
Per the American Film Institute catalog entry for this film, the UK release ran 89 minutes and was cut to 80 minutes for release in the U.S.
The camera that Peter Vadassy uses is a Zeiss Ikon Contax.
Co-stars James Mason and Herbert Lom would both go on to play Jules Verne's character, Captain Nemo. Mason would play the role in Disney's 20,000 Leagues Under the Sea (1954) and Lom in Columbia's Mysterious Island (1961).
This film received its initial USA television presentations in Los Angeles Tuesday 13 March 1956 on KHJ (Channel 9), in Memphis Wednesday 11 April 1956 on WHBQ (Channel 13), in New York City Monday 7 May 1956 on WOR (Channel 9), in Altoona Thursday 15 November 1956 on WFBG (Channel 10), in Fort Worth Saturday 17 November 1956 on WBAP (Channel 5), in New Haven Saturday 24 November 1956 on WNHC (Channel 8), in Boston Saturday 8 December 1956 on WNAC (Channel 7), in Philadelphia Sunday 9 December 1956 on WFIL (Channel 6), and in Wilkes-Barre Tuesday 1 January 1957 on WILK (Channel 34).