Jacques-Yves Cousteau
Self (archive footage)
Acting
Dian Fossey
Self (archive footage)
Acting
Birute Galdikas
Self
Acting
Jane Goodall
Self (archive footage)
Acting
Richard Kiley
Self - Narrator
Acting
Louis Leakey
Self (archive footage)
Acting
Mary Leakey
Self (archive footage)
Acting
Kent Vliet
Self (archive footage)
Acting