Spatial Coverage
- East China Sea2
- Elko County2
- Ems River (Germany and Netherlands)2
- England2
- Estonia2
- Franklin County2
- Front Range (Colo. and Wyo.)2
- Georgia2
- Great Britain2
- Guam2
- Guinea, Gulf of2
- Humboldt County2
- Hupʻo2
- Hupʻo (Korea)2
- Huron, Lake (Mich. and Ont.)2
- Illinois2
- Iron County2
- Italy2
- Iyo Sea (Japan)2
- Katmai National Park and Preserve Region2