American Oceans Campaign, Coral Sea Conservation, Disclosure: Fish Farm Flap, Fish for All, Marine Ecosystem Health Program, Marine Stewardship Council, National Coalition for Marine Conservation, ReefsUK, Stanley's Reef Foundation, Surfrider Foundation USA

Desert Survivors

Activism, Can Our Rain Forests be Saved?, Care2's Race For the Rain Forest, Children's Rainforest, Deforestation: Humankind and the Global Ecological, Floresta, Forest Conservation Archives and Portal, Forest Magazine, Instituto Terra, International Association for Mediterranean Forest, Mountain Forest Project

Seacology

Range Watch, RangeBiome, A Public Rangeland Almanac, RangeNet

Center for Great Lakes Environmental Education, Living Lakes Partnership, Watershed WebRing