Place
- Africa6
- Asia6
- Australasia6
- Central America6
- Europe6
- South America6
- Canada4
- Drakes Bay (Calif.)4
- Mexico4
- Ventura County (Calif.)4
- Alameda County (Calif.)3
- Contra Costa County (Calif.)3
- Napa County (Calif.)3
- San Francisco Bay (Calif.)3
- San Francisco Bay Area (Calif.)3
- San Francisco County (Calif.)3
- Santa Clara County (Calif.)3
- Solano County (Calif.)3
- Tomales Bay (Calif.)3
- California, Northern2