Summer Day on Agassiz National Wildlife Refuge, Minnesota
Summer Day on Agassiz National Wildlife Refuge, MinnesotaA1 Upstream Channel above Mud River Pool on Agassiz National Wildlife Refuge, Minnesota.
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Summer Day on Agassiz National Wildlife Refuge, Minnesota
Summer Day on Agassiz National Wildlife Refuge, Minnesota
Summer Day on Agassiz National Wildlife Refuge, MinnesotaA1 Upstream Channel above Mud River Pool on Agassiz National Wildlife Refuge, Minnesota.
Agapostemon Splendens "Sweat Bee"
A male Agapostomen splendens: A bee of sandy areas also known as the "sweat bee."
A male Agapostomen splendens: A bee of sandy areas also known as the "sweat bee."
Summer Day in North Dakota
A summer day in North Dakota on the Knife River near Golden Vally, North Dakota.
A summer day in North Dakota on the Knife River near Golden Vally, North Dakota.
Summer Day in North Dakota
A summer day in North Dakota on the Little Muddy River below Cow Creek near Williston.
A summer day in North Dakota on the Little Muddy River below Cow Creek near Williston.
Water Under the Bridge
Water flowing under a bridge on the Little Muddy River below Cow Creek near Williston, North Dakota.
Water flowing under a bridge on the Little Muddy River below Cow Creek near Williston, North Dakota.
Scientists Preparing to Radio-Tag Walruses
Scientists prepare to radio-tag walruses in the Chukchi sea to track movements as sea ice is reduced in the region.
Scientists prepare to radio-tag walruses in the Chukchi sea to track movements as sea ice is reduced in the region.
Lunch Date
A queen trigger fish and a green turtle feeding together on a reef in Belize.
A queen trigger fish and a green turtle feeding together on a reef in Belize.
Pacific pocket mouse in Sherman trap
Pacific pocket mouse in Sherman trap
Pacific pocket mouse
Pacific pocket mouse
Eft Stage of a Red-Spotted Newt
The eft stage of a red-spotted newt in Walker County, Georgia (Crockford-Pigeon Mountain Wildlife Management Area)
The eft stage of a red-spotted newt in Walker County, Georgia (Crockford-Pigeon Mountain Wildlife Management Area)
Gray treefrog blending in to tree bark
Tamarac National Wildlife Refuge, Hyla versicolor - Gray Treefrog, ARMI photo by Mark Roth. UMESC
Tamarac National Wildlife Refuge, Hyla versicolor - Gray Treefrog, ARMI photo by Mark Roth. UMESC
Avalanche over Going-to-the-Sun Road, Glacier National Park
Avalanche over Going-to-the-Sun Road, Glacier National ParkAvalanche debris fills a drainage along Going-to-the-Sun Road near Triple Arches. 5/21/2009
Avalanche over Going-to-the-Sun Road, Glacier National Park
Avalanche over Going-to-the-Sun Road, Glacier National ParkAvalanche debris fills a drainage along Going-to-the-Sun Road near Triple Arches. 5/21/2009
Boat equipped with multibeam sonar
Boat equipped with multibeam sonar surveying the bed of the Colorado River in May 2009. Instrument in foreground is robotic total station that automatically tracks boat location and radios the position to a computer on the boat 20 times per second.
Boat equipped with multibeam sonar surveying the bed of the Colorado River in May 2009. Instrument in foreground is robotic total station that automatically tracks boat location and radios the position to a computer on the boat 20 times per second.
Red Knots Forage for Horseshoe Crab Eggs at Delaware Bay
Red Knots Forage for Horseshoe Crab Eggs at Delaware BayRed knots forage for horseshoe crab eggs and other invertebrates on the beaches of Delaware Bay. The bird in the center has an orange leg flag indicating it was captured and flagged in the past in Argentina.
Red Knots Forage for Horseshoe Crab Eggs at Delaware Bay
Red Knots Forage for Horseshoe Crab Eggs at Delaware BayRed knots forage for horseshoe crab eggs and other invertebrates on the beaches of Delaware Bay. The bird in the center has an orange leg flag indicating it was captured and flagged in the past in Argentina.
Thousands of Horseshoe Crabs on Slaughter Beach, Delaware
Thousands of Horseshoe Crabs on Slaughter Beach, DelawareThe morning after a full moon high tide spawn, thousands of horseshoe crabs wait on the mud flats for the high tide to return.
Thousands of Horseshoe Crabs on Slaughter Beach, Delaware
Thousands of Horseshoe Crabs on Slaughter Beach, DelawareThe morning after a full moon high tide spawn, thousands of horseshoe crabs wait on the mud flats for the high tide to return.
Red Knots Forage for Horseshoe Crab Eggs at Delaware Bay
Red Knots Forage for Horseshoe Crab Eggs at Delaware BayRed knots forage for horseshoe crab eggs and other invertebrates on the beaches of Delaware Bay. The bird on the left has a white leg flag marked with an "EX." It was initially capture in Canada in the fall of 2008.
Red Knots Forage for Horseshoe Crab Eggs at Delaware Bay
Red Knots Forage for Horseshoe Crab Eggs at Delaware BayRed knots forage for horseshoe crab eggs and other invertebrates on the beaches of Delaware Bay. The bird on the left has a white leg flag marked with an "EX." It was initially capture in Canada in the fall of 2008.
Columbia Spotted Frog - Glacier National Park
A native Columbia spotted Frog in Glacier National Park.
A native Columbia spotted Frog in Glacier National Park.
Bats in a Texas Evening Sky
Insect-eating Brazilian Free-Tailed bats (Tadarida brasiliensis) provide a great pest-control service to agriculture and natural ecosystems.
Insect-eating Brazilian Free-Tailed bats (Tadarida brasiliensis) provide a great pest-control service to agriculture and natural ecosystems.
Spawing Horshoe Crabs at Delaware Bay
Spawning horseshoe crabs at twilight in the Delaware Bay.
Spawning horseshoe crabs at twilight in the Delaware Bay.
Field collected Acipenseriformes
Acipenseriformes free embryo (pallid sturgeon, shovelnose sturgeon, or paddlefish) collected from the Missouri River.
Acipenseriformes free embryo (pallid sturgeon, shovelnose sturgeon, or paddlefish) collected from the Missouri River.
Avalanche debris on roadway
Road plows begin removing wet slab avalanche debris on Going to the Sun Road in Glacier National Park, 2009.
Road plows begin removing wet slab avalanche debris on Going to the Sun Road in Glacier National Park, 2009.