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Alligator Snapping Turtle

Photo: Alligator snapping turtle in grass, mouth open
The prehistoric-looking alligator snapping turtle is the largest of the North American freshwater turtles.
Photograph courtesy Gary M. Stolz/U.S. Fish and Wildlife Service

Multimedia

Reptile Features

Photo: American bullfrog

Wild Rivers

Visit the rivers and streams of the southeastern U.S., home to some of the most species-rich freshwater systems on Earth, in this Wild World feature.

Photo: Frog

Wild World

Chart Earth's diverse ecoregions, from the Chihuahua Desert to the Congo Basin, on interactive Wild World maps.

Photo: Leatherback sea turtle

Photo of the Day: Nest Eggs

Go to the shores of Gabon, where five of the world's seven sea turtle species, including this leatherback, come to nest.

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Photo: Reflection on Yellowstoen Lake, Yellowstone National park

Photo Contest

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Photo: Valero train

Interactive Map

Explore unique solutions to the world’s biggest challenges.

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Photo: Three-horned chameleon

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Photo: Nile crocodile

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Photo: A cartoon dog

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Six Degrees Book and DVD

Image: Six Degrees DVD and book

Get an eye-opening warning of the dangers of climate change, one degree at a time.