Region
United States
14
Galapagos Islands
6
North America
6
Colorado
5
Nevada
5
California
4
Mexico
4
Alaska
3
Arizona
3
Canada
3
Great Basin National Park
3
Northwest, Pacific
3
South Dakota
3
Idaho
2
Montana
2
Oregon
2
Utah
2
Wyoming
2
Alaska, Gulf of
1
Alberta
1
America
1
American Samoa
1
Aspen (Colo.)
1
Beaufort Sea
1
Bering Sea
1
Bighorn Basin (Mont. and Wyo.)
1
Cedar River National Grassland
1
Chiricahua Mountains
1
Chukchi Sea
1
Custer County
1
Diablo Range
1
Europe
1
Fort Pierre National Grassland
1
Fort Pierre National Grassland (S.D.)
1
Grand River National Grassland
1
Great Britain
1
Great Lakes (North America)
1
Hawaii
1
Imperial Beach
1
Kofa National Wildlife Refuge
1
Latin America
1
Maine
1
Mexico, Gulf of
1
Middle Atlantic States
1
Mississippi River Valley
1
Moosehorn National Wildlife Refuge
1
Moosehorn National Wildlife Refuge (Me.)
1
National Park of American Samoa
1
National Park of American Samoa (American Samoa)
1
National Petroleum Reserve (Alaska)
1
more ...