39 Photos of Animals in Action

Lions, tigers, bears, and eagles—we've curated a selection of stunning wildlife photographs to inspire the nature photographer in you.

Nature photography is part of the fabric of National Geographic. We’ve been showcasing inspiring images from around the world for more than a century. Every year we put the challenge to our readers to take a turn inspiring us. See the incredible photos entered to the 2017 Nature Photographer of the Year contest and find your favorite animals in action.

Ready to join the competition? The 2018 Travel Photographer of the Year will begin April 2. See last year's winners and prepare to enter to win up to $10,000!

Related: A Close Encounter With a Walrus

Getting the perfect shot of a walrus can be a cold, exhausting task. On assignment in a Greenland fjord, photographer Paul Nicklen explains why—then dives in for a close encounter.

Editor's Note: Captions provided by the photographer.