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Region
- Black Hills (S.D. and Wyo.)10
- MassachusettsStellwagen Bank National Marine Sanctuary6
- Stellwagen Bank National Marine Sanctuary (Mass.)6
- India5
- Arctic regions2
- ArizonaMohave County2
- ColoradoAdams County2
- ColoradoWeld County2
- MissouriShannon County2
- Pacific Ocean2
- Antarctica1
- Appalachian Basin1
- Appalachian Region1
- Arctic Ocean1
- Brazil1
- California, Northern1
- CaliforniaInyo County1
- CaliforniaRed Bluff Region1
- Cascade Range1
- Chile1