Tim Fitzharris / Ruby Beach, Olympic National Park, Washington

Michael Durham / Red-legged Frog (Rana aurora) near Circle Creek along coast, Oregon

Michael Durham / Pallid Bat (Antrozous pallidus) flying at night, Washington

Michael Durham / Pallid Bat (Antrozous pallidus) flying at night, Washington

Tim Fitzharris / Paradise Meadow and Mount Rainier, Mount Rainier National Park, Washington

Konrad Wothe / Giant Green Sea Anemone (Anthopleura xanthogrammica) group, Goose Barnacles (Lepas anserifera) group and Ochre Sea Stars (Pisaster ochraceus) at low tide, Olympic National Park, Washington

Konrad Wothe / California Sea Lion (Zalophus californianus) at Cape Alava, Olympic National Park, Washington

Michael Durham / Bald-faced Hornet (Dolichovespula maculata) flying, western Oregon

Michael Durham / Coho Salmon (Oncorhynchus kisutch) eggs at ten weeks after spawning, Washington

Michael Durham / Mountain Lion (Puma concolor) uncovers a young Elk (Cervus elephus nelsoni) calf that it killed and covered with debris earlier, Wallowa County, Oregon * tags and tracking collar on cat were digitally...

Michael Durham / Honey Bee (Apis mellifera) worker collecting nectar from Red Clover (Trifolium pratense) flowers, note the pollen baskets on the legs, northwest Oregon

Michael Durham / Bumblebee (Bombus morrisoni) queen, flying toward Sweet Pea flowers in the Deschutes National Forest, Oregon

Michael Durham / Silver-haired Bat (Lasionycteris noctivagans) illustrating wing movement during flight, Rogue River National Forest, Oregon, digital composite

Michael Durham / Western Long-eared Myotis (Myotis evotis) about to drink from a man-made guzzler, high-desert transition zone in the Deschutes National Forest, Oregon

Michael Durham / California Darner (Rhionaeschna californica) dragonfly, photographed with a high-speed camera, coastal mountains, Oregon

Michael Durham / Yuma Myotis (Myotis yumanensis) bat, female pursuing a moth on the wing, Oregon

Michael Durham / Yuma Myotis (Myotis yumanensis) bat, male capturing a forest moth, Oregon

Michael Durham / Western Pipistrelle (Pipistrellus hesperus) bat flying over desert scrub, near Pine Creek in the John Day Fossil Beds National Monument, Clarno Unit, Oregon, this is the smallest bat found north of Me...

Michael Durham / Western Pipistrelle (Pipistrellus hesperus) bat chases a moth over desert scrub, near Pine Creek in the John Day Fossil Beds National Monument, Clarno Unit, Oregon

Michael Durham / Eight-spotted Skimmer (Libellula forensis) dragonfly male flying, photographed with a high-speed camera system in the coastal mountains of Oregon, near Florence

Michael Durham / Two-striped Grasshopper (Melanoplus bivittatus) adult female jumping, Deschutes National Forest, Oregon

Michael Durham / Bumblebee (Bombus huntii) flying toward the camera after collecting nectar from a Rhododendron flower, northeast Oregon

Michael Durham / Western Gull (Larus occidentalis) flock flying over the Oregon coast

Michael Durham / Pacific Chorus Frog (Pseudacris regilla) jumping into pond, Oregon

Michael Durham / Honey Bee (Apis mellifera) flying hovering over pink flowers, Sauvie Island, Oregon

Michael Durham / Douglas Fir Glow-worm (Pterotus obscuripennis) displaying bioluminescence at night, Tillamook State Forest, Oregon

Michael Durham / Pronghorn Antelope (Antilocapra americana) female, left, and male on grassland, Oregon

Tim Fitzharris / Incoming waves at Bandon Beach, Oregon

Michael Durham / Deer Mouse (Peromyscus maniculatus) jumping as an evasive behavior, Forest Park, Oregon

Michael Durham / Honey Bee (Apis mellifera) flying, Sauvie Island, Oregon

Gerry Ellis / De Brazza's Monkey (Cercopithecus neglectus) portrait, captive animal, Woodland Park Zoo, Washington

Gerry Ellis / Nurse log stage five temperate rainforest, Olympic National Park, Washington

Gerry Ellis / Solomon Island Leaf Frog (Ceratobatrachus guentheri), Woodland Park Zoo, Washington

Gerry Ellis / Chimpanzee (Pan troglodytes) uses fishing tool to catch insects, Washington Park Zoo, Washington

Gerry Ellis / Chimpanzee (Pan troglodytes) teaching, young male to use fishing tool, Washington Park Zoo

Gerry Ellis / Northern Spotted Owl (Strix occidentalis caurina) on moss covered branch in temperate rainforest, Pacific Northwest, North America

Thomas Mangelsen / Spotted Owl (Strix occidentalis) in old growth forest, southwest Oregon

Tim Fitzharris / Paradise River cascade, Mt Rainier National Park, Washington

Tim Fitzharris / Paradise River surrounded by spring flowers, Mt Rainier National Park, Washington

Gerry Ellis / Jaguar (Panthera onca) portrait of young Jaguar, Woodland Park Zoo, Washington

Gerry Ellis / Jaguar (Panthera onca) fur, close-up of patterned detail, Washington Park Zoo, Portland, Oregon

Tim Fitzharris / Paradise River, Mt Rainier National Park, Washington

Tim Fitzharris / Mt Rainier and wildflowers at Reflection lake, Mt Rainier National Park, Washington

Gerry Ellis / Chimpanzee (Pan troglodytes) uses fishing tool, Washington Park Zoo

Gerry Ellis / Temperate rainforest clear cutting with logging road, Olympic National Forest, Washington

Gerry Ellis / Rough-skinned Newt (Taricha granulosa) portrait, Siskiyou National Forest, Oregon

Gerry Ellis / Temperate rainforest with moss covered trees and ferns, Queets River Valley, Olympic National Park, Washington

Gerry Ellis / Still Creek in spring, temperate rainforest, Mt Hood National Forest, Oregon

Gerry Ellis / Chimpanzee (Pan troglodytes) uses fishing tool to feed on insects, Washington Park Zoo

Gerry Ellis / Ring-tailed Lemur (Lemur catta) group, Washington Park Zoo, Portland, Oregon, endemic to Madagascar

Gerry Ellis / Falls on north fork Sauk River, Mt Baker, Snoqualmie National Forest, Washington

Tim Fitzharris / Multnomah Falls cascading through temperate rainforest, Columbia River Gorge near Portland, Oregon

Gerry Ellis / African Lion (Panthera leo) male, portrait, Washington Park Zoo, Portland, Oregon

Gerry Ellis / African Lion (Panthera leo) male, Washington Park Zoo, Portland, Oregon

Gerry Ellis / Chimpanzee (Pan troglodytes) teaching young male to use fishing tool, Washington Park Zoo

Tim Fitzharris / Redhead Duck (Aythya americana) male, Moses Lake, Washington

Tim Fitzharris / Mount Rainier and Reflection Lake, Mount Rainier National Park, Washington

Tim Fitzharris / Seastacks silhouetted at sunset, Ruby Beach, Olympic National Park, Washington

Tim Fitzharris / Seastacks silhouetted at sunset, Ruby Beach, Olympic National Park, Washington

Tim Fitzharris / Eroded river valley, Goosenecks of San Juan River, Goosenecks State Park, Utah

Tim Fitzharris / Incoming fog on Mount Rainier, Mount Rainier National Park, Washington

Tim Fitzharris / Hoh Rainforest, Olympic National Park, Washington

Kevin Schafer / Snowy Owl (Nyctea scandiaca) female on snag, Grays Harbor, Washington

Kevin Schafer / Snowy Owl (Nyctea scandiaca) female, Grays Harbor, Washington

Tim Fitzharris / Seastacks, Lone Ranch Beach, Oregon

Kevin Schafer / Glaucous-winged Gull (Larus glaucescens) eating a seastar, Puget Sound, Washington

Kevin Schafer / Glaucous-winged Gull (Larus glaucescens) eating a sea star, Puget Sound, Washington

Kevin Schafer / Black Brant (Branta nigricans) feeding on kelp, Puget Sound, Washington

Kevin Schafer / Black Brant (Branta nigricans), Puget Sound, Washington

Kevin Schafer / Black Brant (Branta nigricans), Puget Sound, Washington

Kevin Schafer / Black Brant (Branta nigricans), Puget Sound, Washington

Gerrit Vyn / Woman paddleboarding with child in the waters of Puget Sound, Seattle, Washington, USA

Gerrit Vyn / Woman paddleboarding with sailboats in the waters of Puget Sound with the Olympic Mountains in the background, Seattle, Washington, USA

Matthias Breiter / Snow Goose (Chen caerulescens) flock flying above Skagit River flats, Washington

Matthias Breiter / Snow Goose (Chen caerulescens) flock on Skagit River flats, Washington

Matthias Breiter / Snow Goose (Chen caerulescens) flock flying above Skagit River flats, Washington

Matthias Breiter / Snow Goose (Chen caerulescens) flocks flying above Skagit River flats, Washington

Matthias Breiter / Orca (Orcinus orca) pod surfacing off San Juan Island, Washington

Matthias Breiter / Seabirds in front of sun obscured by sea fog, Oregon

Kevin Schafer / Aerial view of Mount St Helens crater with Mount Adams behind, Mount St Helens National Volcanic Monument, Washington

Kevin Schafer / Aerial view of Mount St Helens crater with Mount Hood behind, Mount St Helens National Volcanic Monument, Washington

Kevin Schafer / Aerial view of Mount St Helens crater with Mount Rainier behind, Mount St Helens National Volcanic Monument, Washington

Kevin Schafer / Aerial view of Mount St Helens crater with Mt Adams and Hood behind, Mount St Helens National Volcanic Monument, Washington

Kevin Schafer / Aerial view of crater rim on south slope of Mount St Helens, Mount St Helens National Volcanic Monument, Washington

Kevin Schafer / Aerial view of steam rising from lava inside crater, Mount St Helens National Volcanic Monument, Washington

Kevin Schafer / Toutle River cuts through sediments of eruption, Mount St Helens National Volcanic Monument, Washington

Kevin Schafer / Erosion through ash deposits from eruption, Mount St Helens Volcanic National Monument, Washington

Kevin Schafer / Wildflowers around tree stumps destroyed by eruption, Johnston Ridge, Mount St Helens Volcanic National Monument, Washington

Kevin Schafer / View of Mount St Helens from Johnston Ridge, Mount St Helens Volcanic National Monument, Washington

Kevin Schafer / Lava tube and person in Ape Cave, Mount St Helens Volcano National Monument, Washington

Yva Momatiuk & John Eastcott / Cumulus clouds over prairie, Hart Mountain National Wildlife Refuge, Oregon

Yva Momatiuk & John Eastcott / Tall prairie grasses and dark clouds, Malheur National Wildlife Refuge, eastern Oregon

Yva Momatiuk & John Eastcott / Tall prairie grasses and dark clouds, Malheur National Wildlife Refuge, eastern Oregon

Matthias Breiter / Snow Goose (Chen caerulescens) flock flying over Skagit River flats, Washington

Matthias Breiter / Seattle at night, Seattle, Washington

Matthias Breiter / Snow Goose (Chen caerulescens) flock flying over Skagit River flats, Washington