Here is a growing list of Biological Field Stations:

Archbald Biological Station (Florida)

Belle Baruch Institute for Marine and Coastal Sciences (University of South Carolina)

Bimini Biological Field Station (Bimini Island)

Bodega marine Laboratory (California)

Canadian Organization for Tropical Education and Rainforest Conservation (costa Rica)

Drexel Semester long (Equatorial Guinea, Africa)

Duke semester (Costa Rica)

Georgia semester (South Africa)

Gerace Research Center  (San Salvador, Bahamas)

Hiram (Galapagos)

International Field Studies, Inc. (Andros Island, Bahamas)

Institute for Tropical Ecology and Conservation (Panama)

Institute for Tropical Ecosystem Studies (Puerto Rico)

Institute for Tropical Marine Ecology (Dominica, West Indes)

Iracambi Atlantic Rainforest Research and Conservation Center (Brazil)

IZEBelize (South Water Caye, Blue Creek Rain Forest Preserve, Belize)

Kino Bay Center (Mexico)

Laguna Madre Field Station (Texas)

La Suerte and Ometepe Biological Stations (Costa Rica & Nicaragua)

Marine TREC (San Pedro, Belize)

Meredith College summer (Costa Rica)

Palo Verde Biological Station (Costa Rica)

Primatology and Animal Conservation Lab (Southern Mexico)

Quetzal Education Research Center (Costa Rica)

Seahorse Key Marine Laboratory (Florida)

Smithsonian Tropical Research Institute (Panama)

Study Away: University of Arkansas

Tropical Field Research (Costa Rica)

Univ of Costa Rica semester (Costa Rica)

Virgin Islands Environmental Resource Station (St. John, USVI)