| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S20E01 | Tracking Army Bobcats |
September 13, 1981
NBC
|
25 | |
| S20E02 | The Changing World of the Oxbows |
October 4, 1981
NBC
|
25 | |
| S20E03 | Cougar Family |
October 18, 1981
NBC
|
25 | |
| S20E04 | Valley of the Beavers, Part I |
November 8, 1981
NBC
|
25 | |
| S20E05 | Valley of the Beavers, Part II |
November 15, 1981
NBC
|
25 | |
| S20E06 | Operation Genesis, Part I |
December 27, 1981
NBC
|
25 | |
| S20E07 | Operation Genesis, Part II |
January 3, 1982
NBC
|
25 | |
| S20E08 | Lemurs of Madagascar |
January 31, 1982
NBC
|
25 | |
| S20E09 | Hammerhead Sharks of the Sea of Cortez |
February 14, 1982
NBC
|
25 | |
| S20E10 | The Unexplored Gran Chaco |
March 14, 1982
NBC
|
25 | |
| S20E11 |
White Ghosts of the Forest
season finale
|
March 21, 1982
NBC
|
25 |
No artwork of this type.
No artwork of this type.