Brooks Falls, Katmai National Park and Preserve, Alaska (map), 1999 Photograph by Joel Sartore
A natural-born fisher, this grizzly bear snares a salmon at the Brooks Falls fishing grounds in Katmai National Park and Preserve, Alaska. Though they thrive at Katmai, grizzlies have been pushed from most of their traditional homeland in the lower 48 states. Large animals like bears need lots of room to roam, but such habitat is increasingly hard to find as people convert wilderness into neighborhoods.