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.

Scott Brady
as Commander Wayne

Sheree North
as Dr. Rene Peron

Gary Merrill
as Dr. LaSatier

John Howard
as Dr. James

Wende Wagner
as Sandra Welles

Mike Road
as Hugh Maddox

William Thourlby
as Tex

Biff Elliot
as Dr. Wilson

Roy Barcroft
as Skipper

James Hong
as Ho Lee
CinemaSerf
When some deep sea researchers feel their base being buzzed by a strange object, they assume it's a whale or some other natural occurrence Thing is, soon they realise that is a metallic object - like an aluminium sting-ray - and it contains extraterrestrial life that isn't that friendly. Now they ar...