Place
- Mongolia8
- Connecticut7
- Maine7
- Massachusetts7
- New Hampshire7
- Northeastern States7
- Maine, Gulf of6
- New York (State)6
- Rhode Island6
- California5
- Chesapeake Bay (Md. and Va.)5
- Fundy, Bay of5
- Long Island Sound (N.Y. and Conn.)5
- New Jersey5
- United States5
- Alabama4
- Albemarle Sound (N.C.)4
- Albion River Watershed (Calif.)4
- Arizona4
- Arkansas4