Place
- Rhode Island Sound (Mass. and R.I.)12
- South Carolina12
- Texas12
- West Virginia12
- Wisconsin12
- Buzzards Bay (Mass. : Bay)11
- Long Island Sound (N.Y. and Conn.)11
- Nantucket Sound (Mass.)11
- Penobscot Bay (Me.)11
- Tennessee11
- Tomales Bay (Calif.)11
- Vineyard Sound (Mass.)11
- Zambia11
- Casco Bay (Me.)10
- Mexico10
- Mongolia10
- North America10
- Bodega Bay (Calif.)9
- Solano County (Calif.)9
- Alameda County (Calif.)8