Season 1 (1984)
8.83 avg 12 episodes 8.8 → 8.7 55 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | The Building of the Earth | 8.8 | 158 |
| 2 | The Frozen World | 8.7 | 156 |
| 3 | The Northern Forests | 8.9 | 157 |
| 4 | Jungle | 8.8 | 157 |
| 5 | Seas of Grass | 8.8 | 156 |
| 6 | The Baking Deserts | 8.8 | 154 |
| 7 | The Sky Above | 8.9 | 151 |
| 8 | Sweet Fresh Water | 8.9 | 154 |
| 9 | The Margins of the Land | 8.9 | 151 |
| 10 | Worlds Apart | 8.9 | 153 |
| 11 | The Open Ocean | 8.8 | 151 |
| 12 | New Worlds | 8.7 | 152 |