Place
- United States Virgin Islands7
- Kenya6
- Long Island Sound (N.Y. and Conn.)6
- Monterey County (Calif.)6
- Chesapeake Bay (Md. and Va.)5
- Fundy, Bay of5
- Jasper Ridge Biological Preserve (Calif.)5
- San Mateo County (Calif.)5
- United States. Virgin Islands5
- Woodside (Calif.)5
- Albemarle Sound (N.C.)4
- Aromas (Calif.)4
- Baltimore Canyon4
- Big Sur (Calif.)4
- Bolsa Knolls (Calif.)4
- Bradley (Calif.)4
- Cachagua Creek4
- Carmel (Calif.)4
- Carmel Highlands (Calif.)4
- Carmel Valley (Calif.)4