Migration: Predation

Journey to the east coast of Africa as dolphins, sharks, whales and birds converge to feast on migrating sardines, the greatest shoal on Earth. Biology - Ecosystems - Learning Points. From May to July, millions of sardines migrate to warmer waters around the coast of South Africa. During the sardine run the shoals are trailed by a mass of predators, such as dolphin, sharks and whales. Working together, dolphins use sonar to detect, encircle and trap the sardines creating a 'bait ball' at the ocean surface. The bait ball attracts gannets, sharks and whales. A Twig Context Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.