Region
- Acre 2 results
- Africa 38 results
- Africa, Central 2 results
- Africa, East 4 results
- Africa, Eastern 2 results
- Africa, Southern 10 results
- Africa, Sub-Saharan 16 results
- Africa, West 6 results
- Alabama 6 results
- Alaska 12 results
- Alaska, Southeast 2 results
- Albania 2 results
- Alberta 2 results
- Amazon River Region 12 results
- America 6 results
- Appalachian Region, Southern 2 results
- Aral Sea Region (Uzbekistan and Kazakhstan) 2 results
- Arctic Coast (Alaska) 4 results
- Arena 2 results
- Arena (Wis.) 2 results
- Arizona 2 results
- Armenia (Republic) 2 results
- Asia 8 results
- Asia, Central 4 results
- Atlantic Coast (Canada) 2 results
- Atlantic Coast (New England) 2 results
- Atlantic Ocean 2 results
- Australia 6 results
- Azerbaijan 4 results
- Bahamas 2 results
- Baltic Sea 2 results
- Bang Chan 2 results
- Bang Chan (Thailand) 2 results
- Bastrop County 2 results
- Bastrop County (Tex.) 2 results
- Beijing 2 results
- Bering Sea 4 results
- Bicol (Region) 2 results
- Big Bend National Park (Tex.) 2 results
- Bitterroot National Forest (Mont. and Idaho) 2 results
- Black Belt (Ala. and Miss.) 2 results
- Black Sea Region 2 results
- Blue Mountains (OR and WA) 2 results
- Blue Mountains (Or. and Wash.) 2 results
- Blue Ridge Mountains 2 results
- Brazil 10 results
- British Colombia 2 results
- British Columbia 24 results
- Broken Heart Ranch 2 results
- Buffalo 2 results more…