Spring in the Pacific Northwest sets off a race for survival among predators.
The Okavango River floods the desert of Botswana drawing in an enormous amount of wildlife toward an epic battle.
Dolphins, gannets and sharks are attracted to the yearly migration of the sardines.
Tanzania's Serengeti Plains is home for the lions as they hunt down the wildebeests, zebras and the gazelles.
Salmon return to the rivers to spawn and provide subsistence for the wolves and grizzly bears, in this examination of the Pacific Northwest area.
An investigation of the Arctic and the weather conditions in which polar bears, foxes, guillemots, beluga whales and narwhals endure as summer arrives.
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