Sahara
Available on DVD Now.
An African dictator's nuclear waste disposal plant is mutating the red tide, and so threatens the planet's ecosystem. It's up to Dirk Pitt and his associates from NUMA (National Underwater and Marine Agency) to find the source of the pollution and shut down the operation.

Director: Breck Eisner
Starring: Matthew McConaughey, Penelope Cruz, Steve Zahn
Screenplay: James Hart, Thomas Dean Donnelly, Joshua Oppenheimer, Josh Friedman
Based upon: Clive Cussler’s 1992 novel of the same name

Premise: Adventurer Dirk Pitt (McConaughey) works for NUMA (National Underwater and Marine Agency), a government agency working to protect all things water-related. An encounter on the Nile with a beautiful U.N. medical investigator and neurologist, Dr. Eva Rojas (Cruz), trying to find the cause of a strange epidemic (that is driving North Africans to madness) leads them to suspect a vast pollution problem on the continent that threatens to kill much of the world's marine life, and thus, the entire planet's ecosystem. Pitt leads a special team of experts on a super-equipped yacht on a race against time, and the plans of a money-hungry billionaire and his ally, a violent West African tyrant. Their search takes them through the Sahara Desert, to a vast gold mine run by slave labor, and perhaps even the answers to two of the greatest mysteries of all time... the vast post-Civil War plot to assassinate Abraham Lincoln (and its tie to a missing "Ironclad" battleship, The Texas), and the disappearance of a famous 1930s female pilot...