Summary: When an underwater ocean lab is lost in a earthquake, an advanced submarine is sent down to find it and encounters terrible danger. (imdb)

Poster submitted by Gauntlet

Genre: Sci-fi

Country: Canada

Directed By: Daniel Petrie

Written By: Jack DeWitt

Starring: Ernest Borgnine, Ben Gazzara, Walter Pidgeon, Yvette Mimieux, Chris Wiggins, Donnelly Rhodes

More information at the Internet Movie Database