How'd they do this? We'll show you. Thirty years ago, Steven Spielberg's "Jurassic Park" hit theaters, dazzling audiences and becoming the highest-grossing film ever made up to that point.

As part of Jurassic Park's 30th Anniversary Celebration, Universal Orlando Resort allowed visitors to recreate the infamous death of Donald Gennaro with a photo op. As Jurassic Park's "blood ...