Classified for credit

Chesapeake Bay estuarine nature center — covers tidal wetland ecology, migratory birds, and watershed biology with hands-on outdoor programs.

Maryland state park on the Choptank River — covers tidal freshwater ecology, fishing biology, and Chesapeake watershed geography.

Urban estuary education center on the Patapsco River — covers Chesapeake Bay ecology, water quality, and urban wildlife conservation.

Urban conservation park with stream, forest, and meadow habitats — supports field study of local ecology, watershed biology, and native species.

Outdoor nature classroom with trails, pond study, and wildlife observation — supports local ecology, life science, and environmental education for younger learners.

Specialty azalea and native plant garden managed by the National Park Service — supports botany, plant taxonomy, and horticultural science.

State-managed wildlife sanctuary on the Patuxent River — migratory bird ecology, wetland biology, and Chesapeake Bay watershed studies.

Howard County environmental area with stream, meadow, and forest habitats — watershed ecology, native plant identification, and field science.

Master Gardener demonstration plots covering plant biology, soil science, composting, and sustainable gardening practices.

Urban nature center in Prince George's County with trails and natural-history programming on local ecosystems.

Appalachian mountain state park with forested trails, a lake, and ranger programs — ecology, geology, and outdoor PE.

Maryland state park on a Potomac River peninsula with forest trails and a colonial-era church site — covers Chesapeake ecology and early Maryland settlement.

Chesapeake Bay shoreline state park at the site of the 1814 Battle of North Point — combines tidal ecology study with Maryland military history.

Baltimore County nature center with trails, live animal exhibits, and geology features — covers forest ecology, local wildlife biology, and earth science.

Patapsco Valley trail segment in a large state park — stream ecology, Piedmont geology, and riparian habitat observation along the Patapsco River.

Large Maryland state park along the Patapsco River valley — riparian ecology, watershed geography, and outdoor physical education across multiple trail systems.

Patapsco River valley park with forested trails and stream ecology — supports biology, watershed science, and physical education.

National Wildlife Visitor Center with wildlife exhibits and refuge trails — wildlife biology, migratory bird research, and Chesapeake watershed ecology.

Federal wildlife refuge with visitor center and wildlife observation — covers migratory bird ecology, habitat conservation, and Chesapeake watershed biology.

Maryland state park nature center on the Patuxent River — supports stream ecology, native plant identification, and watershed science.

Penguin habitat at the Maryland Zoo in Baltimore — covers penguin biology, cold-climate adaptation, and zoo conservation programs within a larger zoo visit.

County park nature center on Piney Run reservoir with wildlife exhibits and trails — supports Maryland ecology, bird study, and freshwater biology.

National Park Service unit along the Potomac — covers Chesapeake tidal ecology, conservation, and views of George Washington's Mount Vernon landscape.

Small regional zoo with diverse mammals and birds — supports animal biology, conservation awareness, and taxonomy.