Synopsis
Trapped between the shore on one side and the warm water on the other, sardines swim straight towards the enemy. They fall back to their instinctive defence mechanism and shoal together in a huge mass to confuse their predators. But the dolphins have a strategy which turns this ball of fish to their advantage.
Further Information
Similar broadcast resources
Episode 3 | Great Barrier Reef with David Attenborough
David Attenborough uncovers the ways in which scientists are trying to preserve the Great Barrier Reef and embarks on an ambitious exploration of his own.
Episode 2 | Great Barrier Reef with David Attenborough
David Attenborough examines the journeys made by the birds and whales that visit the reef every year.