Spatial Coverage
- Middle Island (Mich. : Alpena County)1
- Milwaukee1
- Milwaukee (Wis.)1
- Milwaukee Bay (Milwaukee County, Wis.)1
- Minnesota1
- Misehkow River Region1
- Montague (Mich.)1
- Monterey Bay (Calif.)1
- Monterey County (Calif.)1
- Monterey County.1
- Monterey Peninsula (Calif.)1
- Monterey Peninsula.1
- Mumbai (India)1
- New Hampshire1
- New York1
- New York (State)1
- Newcastle (N.S.W.)1
- North America1
- North Carolina1
- Northport (Wash.)1
