It's one of nature's most spectacular phenomena: Watching animals migrate en masse.
For many wildlife enthusiasts, there is nothing quite like seeing polar bears in their natural habitat. Churchill, Canada, is the ideal locale for that.
Multiple departures, October & November
Africa's original safari destination offers a classic wildlife-viewing experience.
Multiple departures, June-December
Swim alongside gentle whale sharks, the world’s biggest fish.
Multiple departures, July & August
Tanzania is duly famed as one of Africa’s top wildlife-viewing destinations.
Multiple departures, January, February, March & December
World Wildlife Fund
1250 24th Street, N.W.
Washington, DC 20037
© 2015 World Wildlife Fund