Captured in Canada and released in the Nicolet Forest of Wisconsin, the marten are observed and studied to insure their survival.

Marlin visits a small mountain island in the middle of Flathead Lake in southern Montana ... the home of a large herd of bighorn sheep.

An ecological study of a mountain valley in Canada shows the dramatic story of the inter-relationship of the animals in their natural habitat.

Marlin observes the study in operation during both winter and summer to learn what happens to elk of the Montana Rockies when forests are cut and logging roads built through their habitat.

Eskimos capture huge wild musk oxen and transfer them to Wrangel Island, USSR.

Marlin has been invited by the Tanzanian government to observe the baboons in the National Parks of Ruaha and Mikumi in southeast Africa.

Lake Rezaiyeh in northwestern Iran is the nesting territory of the greater flamingo. Marlin participates in research of the mysteries concerning this bird.

Marlin Perkins joins a husband-wife scientific team in Tanzania, east Africa to observe their continuing five-year research into the life of the wild dog.

Marlin joins men of Marineland of Australia to rope a large nurse shark.

In the northern part of South Africa, the life and habits of the ostrich is observed.

Commemorating the bicentennial year, this program tells the story of man's first settlement on our Eastern Coast and the animals he saw.

For 20 years the Boteti River in northern Botswana has not flowed. What was once an expansive and prolific body of water gradually dried up, leaving zebras, hippos, elephants and crocodiles dependent on the few pools formed from the occasional rains.