Neacola River, Alaska

Sunlight sparkles along the river’s banks and its tidal flats. —Photograph and caption from the National Geographic book  Through the E...

Danube Delta, Romania

From April to September, millions of migrating birds visit the Danube Delta’s sandy islands, floating reed beds, cane fields, forests, and ...

African Lion Mother and Cub, Tanzania

Everything about this photographic moment is tender. The light, the gesture, the color are perfect. But there is also a small detail that...

Silverback Gorilla, Africa

Some photographic moments are memorable because they are so unlikely. It is impossible to look at this wonderful image by Ian Nichols and...

African Snake

Birds Sweethearts

Macaws typically mate for life. They not only breed with, but also share food with their mates and enjoy mutual grooming.

King Penguins

Strikingly colored, an adult king penguin stands out in a sea of chicks on South Georgia Island.

Cottonmouth, North Carolina

While working as a field researcher for a biodiversity study on pine plantations in North Carolina, I found this  Agkistrodon piscivorus...

Kermode Bear in Tree, British Columbia

A mother of two cubs climbs a Pacific crab apple tree to grab its tart and tiny fruit. In years when autumn salmon numbers are low, the ...

Coyote, Yellowstone National Park

Yellowstone National Park, Wyoming, USA I was taking photos with a colleague when we spotted a coyote on the move. As the coyote w...

Gray Wolf, Washington

A gray wolf rests at Wolf Haven International, a wolf sanctuary in Washington State.

Tigers, India

Meet Smasher—the male in the background. That's the name Steve Winter gave this youngster, cooling off in a watering hole in Bandh...