Destination Inner Space (1966)

A futuristic underwater sea-lab is having problems with a UFO that's parked between them and a nearby deep ocean trench. As they investigate, they attract the unwanted attention of a dangerous creature who puts the scientists and crew in danger.

Directed by: Francis D. Lyon

Starring: Scott Brady, Sheree North, Gary Merrill, John Howard, Wende Wagner, Mike Road

Links: IMDb, Movie posters, Movie stills