Poseidon Rex is a 2013 American sci-fi horror film directed by Mark L. Lester (Firestarter), and starring Brian Krause, Anne McDaniels and Steven Helmkamp.

A small, secluded island off the coast of Belize suddenly finds itself terrorized by a deadly predator from the planet’s distant past when deep sea divers accidentally awaken an ancient evil.

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“I watched this movie expecting total dreck. I was pleasantly surprised. The film is fun, entertaining and the CGI monster is actually not that bad. If you’re a fan of monster movies or dinosaurs then this is a great little low-budget romp.” Amazon reviewer