Wild Wonders of Europe / Dörr / European brown bear (Ursus arctos) looking down from tree, captive, Private Bear Park, near Brasov, Romania, October 2008

Wild Wonders of Europe / Dörr / European brown bear (Ursus arctos) looking down from tree, captive, Private Bear Park, near Brasov, Romania, October 2008

Juergen Freund / Aerial of Kri Island, Kri Eco Resort and Sorido Bay Resort. Raja Ampat, West Papua, Indonesia, February 2010

Tim Laman / Aerial view of Bora Bora Island, Society Islands, French Polynesia. July 2006

Tim Fitzharris / Sand dunes, Coral Pink Sand Dunes State Park, Utah

Steven David Miller / 350-million year old Devonian coral reef with numerous fossils, including nautiloids, Windjana Gorge National Park, The Kimberley, Western Australia

Tim Fitzharris / Wind ripples in sand dunes beneath sandstone cliffs, Coral Pink Sand Dunes State Park, Utah

Tim Fitzharris / Wind ripples in sand dunes beneath sandstone cliffs, Coral Pink Sand Dunes State Park, Utah

Michael & Patricia Fogden / Red sandstone cliffs and sand dune, Coral Pink Sand Dunes State Park, Utah

Michael & Patricia Fogden / Arizona Coral Snake (Micruroides euryxanthus) eating Southeastern Crowned Snake (Tantilla coronata), Sonoran Desert, Arizona

Adam White / Coral atoll - Alphonse from the air, Seychelles

PREMAPHOTOS / Coral snake (Micrurus frontifasciatus) Andes semi-desert at 3300 metres, Bolivia. Rare species.

Michael & Patricia Fogden / Arizona Coral Snake (Micruroides euryxanthus) eating Southeastern Crowned Snake (Tantilla coronata), Sonoran Desert, Arizona