|Running Time: 98 mins.||MPAA Rating: G|
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Summary:When an earthquake on the ocean floor causes an underwater laboratory to fall into a deep trench and places the scientists' lives in peril, Cmdr. Adrian Blake embarks on a rescue mission in his small experimental submarine. Along with a crew that includes Dr. Leah Jansen and diver Don MacKay, Blake attempts to save the scientists from the unexplored depths, while encountering gigantic sea creatures that threaten their survival.