Izembek National Wildlife Refuge, Alaska USFWS Double-crested cormorant Izembek National Wildlife Refuge Donna Dewhurst/USFWS Edwin B. Forsythe National Wildlife Refuge, New Jersey Gene Nieminen/USFWS Interpretive walk at Edwin B. Forsythe National Wildlife Refuge Gene Nieminen/USFWS Okefenokee National Wildlife Refuge Georgia & Florida Joe Doherty/USFWS Okefenokee National Wildlife Refuge George Gentry/USFWS Ash Meadows National Wildlife Refuge, Nevada USFWS Cypress and Great Egret Everglades National Park, Florida National Park Service Mangroves, Everglades National Park National Park Service Chesapeake Bay Estuarine Complex, Maryland & Virginia Eastern Neck NWR Martin NWR Presquile NWR LaVonda Walton/USFWS LaVonda Walton/USFWS Blackwater NWR Mason Neck NWR Earl Cunnigham/USFWS USFWS Cheyenne Bottoms, Kansas © Jim Mason-http://www.naturalkansas.org/cheyenne.htm Cache-Lower White Rivers Joint Venture Area, Arkansas Cache River NWR Gary Tucker/USFWS Mallards at White River NWR F. Eugene Hester/USFWS Horicon Marsh, Wisconsin Niagara Escarpment Resource Network http://www.escarpmentnetwork.org/photo.htm Catahoula Lake, Louisiana http://www.aep.com/newsroom/resources/releaseimages/catahoula-images.htm Delaware Bay Estuary System Delaware, New Jersey and Pennsylvania Little Blue Heron Prime Hook NWR Supwana Meadows NWR Gary M. Stolz/USFWS USFWS Snow Geese Red Knots and Ruddy Turnstones Bombay Hook NWR Cape May NWR Jamie Richie, USFWS USFWS Brown pelicans and White pelicans gather at Pelican Island National Wildlife Refuge, Florida George Gentry/USFWS Roseate spoonbill Pelican Island NWR Wood stork Snowy egret All photos this page: Ryan Hagerty/USFWS Caddo Lake, Texas ©Maria Rivera Connecticut River Estuary and Tidal Wetlands Complex, Connecticut "Connecticut River." Online Photograph. Britannica Student Encyclopædia. 22 May 2008 <http://student.britannica.com/eb/art-92272> Cache River-Cypress Creek Wetlands, Illinois Ned Trovillion/USFWS Sand Lake National Wildlife Refuge, South Dakota John and Karen Hollingsworth/USFWS Bolinas Lagoon, California Corp of Engineers Bolinas Lagoon, California Harbor seals Pine Gulch Creek Gum plant All images this page: © May Chen Quivira National Wildlife Refuge, Kansas American Avocets Black-Necked Stilt © Jim Mason-http://www.naturalkansas.org/quivira.htm Jim Glynn/USFWS Volunteer Tomales Bay, California All images this page: National Park Service Tijuana River National Estuarine Research Reserve, California USFWS Endangered Least tern with chicks Tijuana River NERR USFWS USFWS Vernal pool, Grasslands Ecological Area, CA Photos this page: Rich Albers/USFWS Snow geese, Grasslands Ecological Area Matt Mattinson, USFWS Kawainui and Hamakua Marsh Complex, Hawaii © Eric Guinther/Ahahui Malama i ka Lokahi Kawainui and Hamakua Marsh Complex, Hawaii © Eric Guinther/Ahahui Malama i ka Lokahi Francis Beidler Forest, South Carolina © Mark Musselman/Audubon Society Francis Beidler Forest, South Carolina American alligator Barred owl All images this page: © Audubon Society Olentangy River Wetland Research Park, Ohio World Wetlands Day celebration Palmyra Atoll National Wildlife Refuge, Line Islands, Pacific © Grady Timmons/The Nature Conservancy Palmyra Atoll National Wildlife Refuge, Line Islands, Pacific Clam gardens. © Alan Friedlander-UH/TNC Reef coral. © Chuck Cook/TNC Sooty terns. © Rob Shallenberger/TNC Black tipped reef shark. © Joshua Gabik/TNC Upper Mississippi River Floodplain Wetlands Iowa, Minnesota, and Wisconsin Photos on this page: Cindy Samples/USFWS.