Region
United States
233
Mexico
51
Colombia
16
Guatemala
15
El Salvador
13
Peru
13
Argentina
11
Chile
11
Ecuador
10
Panama
10
Dominican Republic
9
Spain
9
Cuba
8
Honduras
8
Bolivia
6
Uruguay
6
Costa Rica
5
Mexican-American Border Region
5
Nicaragua
4
Equatorial Guinea
3
Outer space
3
Canada
2
Albuquerque
1
Barro Colorado Island (Panama)
1
Barro Colorado Nature Monument (Panama)
1
Belize
1
Colorado River (Colo.-Mexico)
1
Florida, Straits of
1
Latin America
1
Mexico, Gulf of
1
New Mexico
1
Paraguay
1
Rio Grande (Colo.-Mexico and Tex.)
1
Russia (Federation)
1
Tijuana River (Mexico and Calif.)
1
Washington (D.C.)
1
West (U.S.)
1
Western Hemisphere
1