Spatial Coverage
- Barataria Bay (La.)1
- Bass Islands (Ohio)1
- Belgium1
- Bellefontaine Region.1
- Bering Strait1
- Big Horn County1
- Bigfork Region1
- Black Hills (S.D. and Wyo.)1
- Black Sea Coast1
- Black Sea Region1
- Bladen County1
- Bonner County1
- Boston Harbor1
- British Columbia1
- Broad River (Jasper County and Beaufort County, S.C.)1
- Broadwater County1
- Broward County1
- Bucks County1
- Buckskin Mountains Region1
- Cache County1
