06-08Long-beaked common dolphin pod and diving Cape gannets hunting sardines off the Eastern Cape, South Africa - Pete Oxford
06-06An indigo bunting at the John James Audubon Center at Mill Grove in Audubon, Pennsylvania - Vicki Jauron/Getty Images)
06-04Banner Peak and Thousand Island Lake, Ansel Adams Wilderness, California - Michael DeYoung Photography/Tandem Stills + Motion)