A series of underwater adventures.
The Great Barrier Reef. Divers
Martha Holmes and Mike deGruy head for
Australia.There they are surrounded by grey reef sharks and, in a less sinister encounter, they face a posse of giant groupers. These are enormousfish which change sex - but why?
Up on the beach. Martha and Mike watch entranced as turtles lumber ashore to lay eggs. Laterthey watch as the mass of corals all along this spectacular reef release their eggs and sperm in an underwater extravaganza that rivals any firework display. Director Sara Ford ; Producer Robin Hellier