"Narrator: This is the sea, as old as the world itself. It extends over three quarters of the surface of the globe. Th…"

"Dr. J.R. Matheny: No frontier was ever explored by just one expedition."

"The Captain: I don't know about you guys, but I'm ready for a two inch steak!"

"See! The terror of a skindive to the center of the Earth! Caverns of Forgotten Men! Boiling Volcanos! Tidal Earthquak…"

"See women trapped in fantastic caverns at the center of Earth!"

"John Carradine — Prof. Millard Wyman"

"Robert Clarke — Craig Randall"

"Phyllis Coates — Dale Marshall"

"Sheila Noonan — Lauri Talbott"

"Love! Laughter! Thrills! Wonders! Suspense! Spectacle! Heart!"