With a voracious trio of mako sharks wreaking havoc, Deep Blue Sea dares to up the ante on Jaws, but director Renny Harlin trades the nuanced suspense of Spielberg's 1975 blockbuster for the trickery of the digital age. In other words, why build genuine terror when you can show ill-fated humans getting torn into bloody chunks? The aforementioned makos have been lab rats in an effort to harvest a m