Region
United States
138
California
10
Atlantic Coast (U.S.)
5
Northeastern States
5
Klamath River (Or. and Calif.)
4
Klamath River Watershed (Or. and Calif.)
4
North America
4
Alaska
3
Atlantic Ocean
3
Montana
3
Bering Sea
2
Central America
2
China
2
Colorado
2
Florida
2
Idaho
2
Maine, Gulf of
2
North Pacific Ocean
2
Oregon
2
Scott River Watershed
2
Shasta River
2
Washington (State)
2
West (U.S.)
2
Yellowstone National Park Region
2
Africa, East
1
Alabama
1
Antarctica
1
Arizona
1
Beaufort Sea
1
Belize
1
Black Hills National Forest (S.D. and Wyo.)
1
Block Island Sound
1
British Columbia
1
Caribbean Sea
1
Chesapeake Bay Watershed
1
Chukchi Sea
1
Cuyahoga Valley National Park (Ohio)
1
Europe
1
Frank Church-River of No Return Wilderness (Idaho)
1
French Polynesia
1
Georgia
1
Guatemala
1
Gulf Islands National Seashore
1
Indo-Pacific Region
1
Klamath National Forest (Calif. and Or.)
1
Latin America
1
Long Island Sound (N.Y. and Conn.)
1
Maine
1
Marquesas Islands
1
Marsh-Billings-Rockefeller National Historical Park (Vt.)
1
more ...