They're working on a cure for Alzheimer's disease, using a protein only found in the brains of sharks.
Bigger brains means smarter sharks.
And trust me when I say that bigger, smarter sharks are a real pain in the ass. I'm not a huge fan of director Renny Harlin. But I really enjoyed Deep Blue Sea . This is a great B-movie. Better still, Harlin and his team knew that this was a B-movie going in, so they were able to play around with the conventions of the genre.