The ocean covers 70 per cent of the earth's surface. It contains extraordinary creatures like the leafy sea dragon, the narwhal 'Unicorn of the sea' and the whale shark. It has kelp forests, deserts, coral reef jungles and the cold black permanent night of the deep sea. It affects our oxygen and our weather. David Attenborough shows the riches and diversity of this spectacular realm and he also dives with sharks. We see his reactions to them and their reactions to him.
Winner of the "Best Editing Award" at the Wildscreen "Panda" awards ceremony in October 1984
| Camera: | Hugh Maynard |
| Camera: | Martin Saunders |
| Director: | Richard Brock |
| Dubbing: | David Old |
| Editor: | Andrew Naylor |
| Music: | Elizabeth Parker |
| Narrator: | David Attenborough |
| Producer: | Richard Brock |
| Production Organisation: | BBC - Natural History Unit |
| Script: | David Attenborough |
| Sound: | Lyndon Bird |
 Wildscreen Panda Awards 1984 (1984) |
