Deep Blue Sea is a 1999 science fiction thriller film that stars Saffron Burrows, Thomas Jane, LL Cool J, and Samuel L. Jackson. The film was directed by Renny Harlin and was released in the United States on July 28, 1999.
On a remote top-secret island facility called Aquatica, a team of scientists are searching for a cure for Alzheimer's disease. One of them, Dr. Susan McAlester (Saffron Burrows), violates the code of ethics, and genetically engineers three Mako sharks, intending to increase their brain capacity so that they can harvest the tissue as a cure for Alzheimer's. Unfortunately, the increased brain capacity also makes the sharks smarter, faster, and more dangerous. Aquatica's financial backers are skeptical and nervous about the tests, and send a corporate executive (Samuel L. Jackson) to visit the facility.
In order to prove that the research is worth it, the team manage to remove brain tissue from the largest shark the adult female. However, an accident sets off a chain of events that allows the sharks to engineer an escape, and flood the internal structure, allowing them entry to target the humans within it. The team of scientists have to escape the sinking research centre and avoid being killed, without allowing the sharks to reach open water. One by one the team is killed off by the sharks until only the cook, Preacher (LL Cool J), McAlester, and Carter Blake (Thomas Jane) are left alive. They make the startling discovery that the sharks have not just been trying to kill them, but were actually leading them to flooding the facility so they could escape into the open sea to breed. McAlester, in a sacrificial effort to distract the last of the three sharks, allows it to kill her while Preacher and Blake blow the shark out of the water, and await rescue as boats containing other researchers come toward the facility.
The film received mixed reviews from critics. Rotten Tomatoes gave it a 57% "rotten" rating with 51 out of 89 reviews counted fresh, and a consensus that says "Aside from a few thrills, Deep Blue Sea is unoriginal and unintelligent."
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