Spatial Coverage
- Southeast Asia41
- Superior, Lake41
- Hudson River (N.Y. and N.J.)40
- Wisconsin.40
- Asia39
- Florida.39
- Jackson County39
- New Jersey.39
- New York.39
- California Desert National Conservation Area (Calif.)38
- Massachusetts.38
- Montgomery County38
- New England.38
- North Sea38
- Norway38
- Saint Lawrence River38
- Europe, Eastern37
- India.37
- Johnson County37
- San Francisco37
