47 Meters Down has unveiled its second trailer, and it looks like it’s shaping up to be another intense addition to the well-trod genre of shark thrillers. Such films have been frequent fare for the big screen ever since the release of Jaws, Steven Spielberg’s seminal 1975 blockbuster. In recent years, their output has somewhat waned, but last year’s The Shallows seems to have reignited interest in shark-infested horror flicks.