7/8. David Attenborough narrates a natural history of the oceans. As snails surf the waves in pursuit of a meal, how do the tides create opportunities for marine life? [S,AD]
6/8. David Attenborough narrates a natural history of the oceans. Developed over centuries, coral reefs house fragile ecosystems, but they too have to fight to survive. [S,AD]
5/8. David Attenborough narrates a natural history of the oceans, exploring the richest waters on Earth, where the annual cycle of the sun drives an explosion of life. [S,AD]
4/8. A natural history of the oceans. A look at the survival techniques of creatures that endure the harsh conditions of the Arctic and Antarctic. [S,AD]
3/8. David Attenborough narrates a natural history of the oceans. The deadly game of hide-and-seek played by the sea's charismatic hunters - whales, shark and billfish. [S,AD]
2/8. David Attenborough narrates a natural history of the oceans to uncover the strange, otherworldly creatures living in the depths of the ocean. [S,AD]