Deep Blue Sea (1999)
Synopsis: "If the thought of a shark encounter doesn't get your heart racing, imagine a run-in with a genetically enhanced one! As part of her research on brain-tissue regeneration, Dr. Susan McAlester (Saffron Burrows) alters the DNA of a number of sharks, giving them near-human intelligence. While she and her crew work at their underwater facility, the sharks grow resentful of their captivity and start using their new capabilities to their own advantage."
Synopsis compliments of Netflix