Place
- Bahrain7
- Block Island Sound (R.I.)7
- Boston Harbor (Mass.)7
- Casco Bay (Me.)7
- Cobscook Bay (Me.)7
- Contra Costa County (Calif.)7
- Frenchman Bay (Me.)7
- Illinois7
- Kentucky7
- Long Island Sound (N.Y. and Conn.)7
- Mississippi7
- Missouri7
- Nantucket Sound (Mass.)7
- New Mexico7
- North Carolina7
- Penobscot Bay (Me.)7
- South Carolina7
- Texas7
- Ventura County (Calif.)7
- Vineyard Sound (Mass.)7