Region
United States
82
Florida
59
California
30
Everglades
25
Everglades (Fla.)
22
Washington (State)
14
Chesapeake Bay (Md. and Va.)
10
Florida Keys National Marine Sanctuary
10
Gulf States
10
Mexico, Gulf of
10
Tahoe, Lake, Watershed (Calif. and Nev.)
9
West (U.S.)
9
Great Lakes (North America)
8
Gulf Coast (U.S.)
8
Louisiana
8
San Francisco Bay
8
Tahoe, Lake (Calif. and Nev.)
7
Iowa
6
Puget Sound
6
New Mexico
5
Oregon
5
Alaska
4
Arizona
4
Great Basin
4
Northwest, Pacific
4
Salton Sea
4
Salton Sea (Calif.)
4
Southwest, New
4
Southwestern States
4
Alabama
3
Australia
3
Chesapeake Bay Watershed
3
Dauphin Island
3
East (U.S.)
3
Everglades National Park
3
Illinois
3
Mekong River Watershed
3
North America
3
Puget Sound (Wash.)
3
Queensland
3
Texas
3
Arthur Kill (N.J. and N.Y.)
2
Atlantic Ocean
2
Caloosahatchee River Watershed
2
China
2
Elwha River
2
Elwha River (Wash.)
2
Eureka County
2
Everglades National Park (Fla.)
2
Great Lakes Region (North America)
2
more ...