Classified for credit

State park on Flathead Lake — supports study of freshwater lake ecology, native fish habitat, and Rocky Mountain geography with beach and water access.

Lake Superior island state park accessible by ferry — covers Great Lakes ecology, boreal forest biology, and island geography.

Colorado River recreation area with riparian habitat — covers desert ecology, river geography, and native species along the Nevada-Arizona border.

One of North America's largest bogs — field study of peatland ecology, hydrology, and boreal habitat.

Big Cat Country habitat at the Saint Louis Zoo features lions and other large felids — supports zoology, predator ecology, and African savanna biology.

Big cat habitat exhibit at the Philadelphia Zoo — large felid biology, conservation status, and predator ecology in an accredited zoo setting.

Iowa state park on a reservoir — covers freshwater habitat, Iowa ecology, and outdoor recreation with ranger-led programming.

NPS visitor center for Big Cypress National Preserve covering Everglades ecology, cypress swamp biology, and Florida panther conservation.

Vermont state park within Groton State Forest offering lake ecology, forested trails, and outdoor biology study.

State park centered on a dramatic waterfall on the Missisquoi River — covers hydrology, riparian ecology, and Vermont geology.

Lake Geneva shoreline state park with sandy beach, trails, and Great Lakes-region freshwater ecology suitable for basic biology and PE.

Wetland nature trail at Big Haynes Creek — covers Georgia Piedmont ecology, freshwater wetland biology, and native plant identification.

Tennessee state park featuring a beaver pond, bottomland hardwood forest, and wetlands — supports aquatic ecology, wildlife biology, and PE.

Hawaiian national wildlife refuge complex protecting endemic and migratory species — covers island biogeography, endangered species ecology, and Pacific conservation.

Hands-on petting zoo and educational animal park — introduces animal science, zoology basics, and animal husbandry to younger learners.

Federally managed bottomland hardwood and wetland refuge — supports waterfowl ecology, wetland biology, and wildlife observation.

National wildlife refuge visitor center in the Mississippi Alluvial Valley — wetland ecology, migratory waterfowl biology, and conservation management.

Lakeside state recreation area in the Matanuska-Susitna Valley offering freshwater ecology observation, wildlife habitat, and outdoor PE.

Alaska state recreation site on Big Lake — supports freshwater ecology, Alaskan natural history, and outdoor recreation study.

Missouri state park on an oxbow lake along the Missouri River — wetland ecology, migratory bird observation, and floodplain geography.

Federal refuge along the Missouri River floodplain — covers bottomland ecology, migratory wildlife, and river biology.

State park protecting one of Missouri's largest remaining lowland forests — supports old-growth ecology, tree identification, and wetland biology.

Federal wildlife refuge on former Jefferson Proving Ground lands — grassland and wetland ecology, migratory birds, and habitat restoration study.

National wildlife refuge on the former Jefferson Proving Ground — covers grassland and wetland ecology, wildlife management, and habitat restoration.