Group of dolphins (Delphinus delphis) creating a network of air bubbles to trap a small group of sardines before launching the attack. Photographed during the South African sardine run, an event taking place yearly between May and July, when millions of sardines lay their eggs in the cold waters of the Agulhas shoal and then move north along the eastern coast of South Africa, being chased and hunted by dolphins, sharks, whales and birds.