Classified for credit

Coastal Maine national park with tide pools, forests, and rocky summits — covers marine ecology, geology, and New England natural history.

National park featuring over 2,000 sandstone arches — covers geology, erosion, desert ecology, and physical geography in a hands-on outdoor setting.

Zoo and botanical garden combined into a living museum of the Sonoran Desert — regional ecology, desert adaptation, herpetology, and conservation biology.

National seashore barrier island with wild ponies, tidal marshes, and Atlantic beach ecosystems — covers coastal ecology, barrier-island geology, and wildlife biology.

National seashore barrier island with wild ponies, migratory birds, and tidal ecosystems — coastal ecology, wildlife biology, and conservation.

AZA-accredited zoo with strong conservation programs covering animal biology, endangered species, and Louisiana wetland ecosystems.

NPS national park featuring eroded badlands formations, fossil beds, and mixed-grass prairie — geology, paleontology, and Great Plains ecology.

NPS national park with dramatic eroded buttes and fossil beds — covers geology, paleontology, ecology, and Great Plains geography.

Vast national park straddling the Chihuahuan Desert — covers desert ecology, geology, river systems, and Chihuahuan biodiversity with ranger programs.

Remote Chihuahuan Desert national park with ranger programs covering geology, ecology, desert biology, and dark-sky astronomy.

National park protecting coral reefs, mangroves, and Biscayne Bay — covers marine ecology, coral biology, and coastal geography with snorkel and boat tours.

National park featuring one of North America's deepest gorges — geology, erosion, plate tectonics, and riparian ecology with ranger programs.

469-mile National Parkway corridor — supports geography, Appalachian ecology, geology, and physical education via ranger programs and trails.

Federally designated wilderness canoe area in northern Minnesota — covers freshwater ecology, boreal forest biology, navigation, and wilderness geography.

Federally designated wilderness canoe area covering over a million acres — supports ecology, freshwater biology, wilderness navigation, and physical education.

One of the world's largest zoos with strong conservation programs — covers animal biology, ecology, and global biodiversity.

National park featuring hoodoo geology, erosion science, and high-altitude ecology with ranger-led programs and marked trails.

National monument protecting a living coral reef ecosystem accessible by snorkeling and diving — covers marine biology, coral ecology, and Caribbean natural history.

National park covering canyon geology, desert ecosystems, and Colorado River watershed — strong earth science, geography, and biology curriculum hooks.

National park featuring canyon, mesa, and river confluence geology — covers erosion, plate tectonics, desert ecology, and Colorado Plateau geography.

National seashore with beaches, dunes, freshwater ponds, and ranger programs — covers coastal ecology, erosion, and Atlantic shoreline geography.

National park featuring exposed geologic folds, reef fossil beds, and canyon hikes — covers plate tectonics, stratigraphy, and desert ecology.

National park with exposed Waterpocket Fold geology — supports earth science, desert ecology, stratigraphy, and physical geography.

NPS island park off the Southern California coast — covers island biogeography, marine ecology, kelp forest biology, and Channel Islands Chumash history.