The Great Tide

The sardine run occurs off the east coast of South Africa during the winter months of June and July, when huge shoals of sagax sardinops sardines move northwards towards the warmer waters of Durban in what is believed to be a spawning migration. Following them are thousands of predators, including shark, dolphins, gannets and bryde's whales, all intent on taking advantage of the concentration of food. These images, which document the filming efforts of a BBC Natural History Unit team, were shot over three years between 2007 and 2009.