Region
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Mediterranean Region
1
Merced River
1
Mexico
1
Mexico, Gulf of
1
Middle East
4
Middle West
1
Midway Islands
2
Moon
1
Morocco
1
Morris County
1
Nantucket
1
Navajo Sandstone
1
Netherlands
2
Nevada
1
New Haven
1
New Haven (Conn.)
1
New Jersey
1
New Mexico
1
New York
1
New York (State)
3
Newport
1
North America
10
North Carolina
1
Northeastern States
2
Northern Ireland
1
Northwest, Pacific
1
OECD countries
2
Ohio
2
Ontario
1
Oregon
1
Outer space
5
Pacific Area
7
Pacific Coast
1
Pacific Coast (U.S.)
3
Pacific Ocean
4
Pacific and Mountain States
1
Padang
1
Papahānaumokuākea Marine National Monument (Hawaii)
1
Pennsylvania
2
Philadelphia
2
Philadelphia (Pa.)
2
Point Reyes Peninsula
1
Puget Sound
1
Québec (Province)
4
Rockaway River Watershed
1
Rocky Mountains
2
Russell Fiord
1
Russell Fiord (Alaska)
1
Russia (Federation)
12
Saint Clair River
1
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