Place
- Vineyard Sound (Mass.)3
- Alaska2
- Georges Bank2
- Mali2
- Nantucket Shoals (Mass.)2
- New York Harbor (N.Y. and N.J.)2
- North America2
- San Mateo County (Calif.)2
- Santa Cruz County (Calif.)2
- Solano County (Calif.)2
- Alameda County (Calif.)1
- American Samoa1
- Bahrain1
- Block Island (R.I. : Island)1
- Boothbay Harbor (Me.)1
- Champlain, Lake1
- Contra Costa County (Calif.)1
- Earth (Planet)1
- Guam1
- Harwich (Mass.)1