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| Aflevering | Eerste uitzending |
|---|---|
| S04E01 - And Then the Rains Came | 20/10/1985 |
| S04E02 - Battle of the Leaves | 27/10/1985 |
| S04E03 - The Ganges Gharial | 03/11/1985 |
| S04E04 - One Man’s Island | 10/11/1985 |
| S04E05 - Selva Verde: The Green Jungle | 17/11/1985 |
| S04E06 - The Plant Hunters | 24/11/1985 |
| S04E07 - Kalahari: Wilderness Without Water | 15/12/1985 |
| S04E08 - Emas: High Plains of Brazil | 05/01/1986 |
| S04E09 - The Feathered Swarm | 26/01/1986 |
| S04E10 - Kingdom of the Ice Bear: The Frozen Ocean | 16/02/1986 |
| S04E11 - Kingdom of the Ice Bear: Land of Beyond | 23/02/1986 |
| S04E12 - Kingdom of the Ice Bear: The Final Challenge | 02/03/1986 |
| S04E13 - Saguaro: Sentinel of the Desert | 09/03/1986 |
| S04E14 - Death Trap | 23/03/1986 |
| S04E15 - Aspen: Dancer on the Wind | 06/04/1986 |
| S04E16 - Secrets of an African Jungle | 27/04/1986 |
| S04E17 - Birdwatch From Florida | 04/05/1986 |
| S04E18 - The Gooneys of Midway | 11/05/1986 |
| S04E19 - Where Eagles Fly | 18/05/1986 |
| S04E20 - The Skyhunters | 25/05/1986 |