Prominent scientists Dr. William Beebe and Otis Barton, using the Bathyspere invented by Barton, descend several thousand feet to the ocean floor off of the shores of Bermuda to study and film sea creatures seen and filmed at that depth for the first time. A sometimes staged semi-documentary that was often sold and advertised as an exploitation/horror picture.
William Beebe
as Dr. William Beebe
Otis Barton
as Otis Barton
John Tee Van
as John Tee Van - Crew Member
Gloria Hollister
as Gloria Hollister - Crew Member
Lowell Thomas
as Narrator
