Place
- New York State Canal System (N.Y.)1
- New Zealand1
- Nicaragua1
- Pakistan1
- Papua New Guinea1
- Passamaquoddy Bay (N.B. and Me.)1
- Pawtuxet River (R.I.)1
- Pettaquamscutt River (R.I.)1
- Piscataqua River (N.H. and Me.)1
- Plymoth (Mass.)1
- Plymouth Bay (Mass.)1
- Point Lobos State Reserve (Calif.)1
- Saint Helena1
- Saint Vincent and the Grenadines1
- Sakonnet River (R.I.)1
- San Francisco Bay Area (Calif.)1
- Santa Maria River (Calif.)1
- Saudi Arabia1
- Senegal1
- Sequit Point (Calif.)1