Check this trailer for upcoming film The Shallows.
Nancy (Blake Lively) is surfing when she is attacked by a great white shark and ends up trapped on rock just 200 yards from the shore. It would be a short swim, but the shark is still there, and probably, still hungry. The film stars Blake Lively, a shark, and a rock.
Anyway, watch the trailer. It’s intense. The Shallows is due in theaters this summer just in time for swimming season!