Former surfing world champion Tom Carroll appears early in the film as a surfer with a cut eye. According to producer Brian Grazer, this is a real injury - Carroll had wiped out on the reef just seconds earlier - and it made the three cast members (Kate Bosworth, Michelle Rodriguez and Sanoe Lake) nervous about going in the water. The footage was shot for a surf video Carroll was part of and Grazer used it in the film, presumably because it added to the characters' anxiety at entering the surf and validated how dangerous it was.