Deep Blue Sea updates the man-eating shark myth brought so viscerally and intelligently to the screen with Jaws (1975). The film does little to improve upon shark stories already told on film but, it is slick enough and of sufficient pacing to stay afloat on a ocean of cliched moments and narrative devices. There is a reasonable premise. A group of ambitious scientists stationed in a remote aquatic facility, have genetically altered several sharks to increase the size of the animals’ brains. The theory is that the sharks brains will produce a hormone that can be used to fight Alzheimers in humans.Predictably, the larger brains make the sharks smarter and more formidable. Samuel L. Jackson plays Russell Franklin, the wealthy business man who threatens to remove his financial support for the project unless it produces results. Saffron Burrows, is Dr. Susan McAlester, the ambitious young scientist driven by personal experience to find an Alzheimers cure...at any cost. Thomas Jane, is the taciturn shark handler who reveals an unsupected strength of character in the face of adversity.Borrowing narratively from the Alien formula, Deep Blue Sea allows the sharks to invade the very corridors of the labyrinthine underwater facility to kill off characters one by one. However, the film makers shuffle some of the typical action thriller ingredients, serving the sharks their victims out of the anticipated order and sparing some that you might not expect.And also the cast performance is very poor.The gore is lightening fast and almost cartoonish, the sharks are, for the most part, quite clumsily animated, and the acting throughout is unremarkable. What holds the film together is a sense of timing that allows little time for reflection on the derivative nature of the story, or the enormous holes in the plot.