The Monster That Challenged the World
Directed by Arnold Laven
Produced by Arthur Gardner
Jules V. Levy
Written by David Duncan (story)
Pat Fielder
Starring Tim Holt
Audrey Dalton
Music by Heinz Roemheld
Cinematography John D. Faure
Editing by Lester White
Distributed by United Artists
Release date(s) Flag of the United States.svg June 1957
Flag of Japan.svg December 22, 1960
Running time 83 minutes
Country USA
Language English

The Monster That Challenged the World (1957) is a science-fiction monster movie, about an army of giant mollusks that emerge from the Salton Sea, California. Directed by Arnold Laven, the film starred Tim Holt and Audrey Dalton.

It was produced by Gramercy Pictures (not related to the former PolyGram division) and released by United Artists. The film is currently available on DVD as part of UA sister Metro-Goldwyn Mayer's Midnight Movies collection.


An earthquake has led to the hatching of eggs belonging to a prehistoric mollusk. The hatchlings emerge from the Salton Sea, escape into an underground aquifer, and proceed to terrorize the citizens of California's Imperial Valley. The navy is called in to battle these monsters. Navy Lieutenant Commander John Twillinger (Holt), teams up with several scientists to battle the threat.


  • The film was inspired by the true story of prehistoric brine shrimp eggs that were reconstituted after several million years.
  • The original title for the film was The Jagged Edge.
  • The bulk of the underwater scenes were shot off the coast of Los Angeles, at Catalina Island; the close-ups were filmed later, in a tank filled with water and plastic seaweed.


External linksEdit