There are invisible things that the human eye cannot perceive because they are too small, too large, too fast, too slow, or beyond the spectrum of visible light.
Filmed at Namibia's Etosha National Park this video takes a look at a wide selection of wildlife, including zebras, cheetahs, wildebeest, lions and elephants.
Contribute to this page
Suggest an edit or add missing content
Top Gap
By what name was National Geographic Specials (1965) officially released in Canada in English?