Death Beach (2012)

Man-eating sharks seemingly flock to South Africa's Second Beach. This remote coastline was once considered a surfer's best-kept secret, but now its regarded as Earth's most dangerous beach. Here, sharks don't simply attack; they kill. Gruesome attacks have claimed six lives in five years. Something has triggered bizarrely aggressive behavior in these predators, and biologist Matt Dicken is on a quest to find out why. Join him as he confronts the killers in their own domain.