3,856 Free Photos of Threatening

endangered and/or threatened species fish water work of the service biologists(usfws)wildlife refuge animals aquatic environment underwater boat

Dip netting a salmon in the Klickitat River-4

Devils Hole pupfish-2

Santa Monica Mountains dudleya-4

Biologists search for Fountain Darter-2

Red Knot banding-3

Young couple fishing

Biologists show length of Gulf sturgeon in river-1

Biologist shows front view of Gulf sturgeon in river-2

Biologist shows side view of Gulf sturgeon in river-3

Biologists display spine of Gulf sturgeon in river

Preparing a small GPS satellite collar for the sedated lynx

mammals monitor

Florida manatee-2

Pallid Sturgeon-4

Man holds Trumpeter swan during demonstration

Green sea Turtle

Young couple fishes on the Columbia River

Snorkeler searches for hellbenders

Juvenile Gopher tortoise after digging burrow

Biologists in boat study Gulf sturgeon in river-1

Razorback sucker-1

Hatchling Gopher tortoises emerging from burrow to bask

reptiles animals

Pallid Sturgeon-1

Biologists weigh a Gulf sturgeon in river

Ash Meadows Amargosa pupfish-1

Biologists show length of Gulf sturgeon in river-6

Pagosa skyrocket flowers

Ash Meadows Amargosa pupfish-1

Hine's emerald dragonfly larvae in shallow water-4

arthropod animals

Ash Meadows Amargosa pupfish-2

Pallid Sturgeon-2

FWS biologist observes captive Devils Hole pupfish-3

Juvenile pallid sturgeon -5

FWS biologist observes captive Devils Hole pupfish-1

Razorback sucker-2

Snorkeling for Eastern hellbenders

FWS biologist observes captive Devils Hole pupfish-3

Southern Sea otter settling in for a nap

animals mammals

FWS biologist observes captive Devils Hole pupfish-3

Biologists show length of Gulf sturgeon in river-1

Biologists search for Fountain Darter-1

Pallid Sturgeon-1

Kenwood Marsh checkermallow

Fishing on the Columbia River-3

Candy darter-1

Traditional dip netting-1

Brown Noddy perched on a piece of wood

Wolf collaring-2

Biologists in boat study Gulf sturgeon in river-1

Captive Devils Hole pupfish-1

Pallid Sturgeon-3

Candy darter-1

underwater fish

Delmarva Peninsula fox squirrel pit tagging

maryland mammals

Measuring the canines of a sedated lynx

mammals monitor

Biologist shows front view of Gulf sturgeon in river-2

Bengal Tiger cub

wildlife animals

Hawaiian monk seal-1

landscape water

American Crocodile and American Alligator

Southern Sea otter with gull

FWS biologist observes captive Devils Hole pupfish-2

Candy darter

Dudley Bluffs bladderpod

Biologist carrries a sedated Canada lynx

Ash Meadows Amargosa pupfish-1

Pair of Wood storks-2

Endangered Hawaiian monk seal and Laysan albatross

Mission Blue butterfly-1

Razorback sucker-1

Island marble butterfly-5

landscape nature

Delmarva Peninsula fox squirrel-1

animals mammals

Candy darter-1

FWS biologist observes captive Devils Hole pupfish-2

Biologist shows front view of Gulf sturgeon in river-1

Black-footed Ferret release site

landscape travel

Traditional dip netting-4

Florida manatee-1

Fishing on the Columbia River-1

Swamp Pink

butterfly animals

Biologists display spine of Gulf sturgeon in river-2

Biologists secure boat along shoreline-2

FWS biologist observes captive Devils Hole pupfish-2

Yakama tribal member with traditional dip net

Razorback sucker-2

Canyon at San Diego National Wildlife Refuge

Biologist shows front view of Gulf sturgeon in river-3

Southern sea otter with her pup in Moss Landing

Yakama tribal member with traditional dip net-4

Working on a sedated lynx in the field

Pallid Sturgeon-13

Raft of Southern Sea Otters

American paddlefish and Pallid sturgeon

underwater fish

Public access fishing area

Southern Sea otter with green crab

Ash Meadows Amargosa pupfish-1

Barrier protects mountain yellow-legged frogs from nonnative tro

landscape water

Biologists deploy a GPS elk collar on a cow elk

Delmarva Peninsula fox squirrel pit tagging-1

maryland mammals

Pallid sturgeon juvenile yearling-1

Biologist shows front view of Gulf sturgeon in river-2

Photographer captures anglers with their fresh catch

Recreational boating along the Columbia River-2

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