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.

• DirectorFrancis D. Lyon
• Release1 May 1966
• Genre
  Thriller / Science Fiction
• Duration1h 23m
• Budget?
• Revenue?
• Rate
  

  5.0
  21 reviews
• Productions

  United Pictures, Harold Goldman Associates, Television Enterprises Corporation