A list of ecology-focused sims in Second Life:
Abyss Observatory
Beautiful underwater science museum (Teleport Link)
CNDG Green Campus
Experimental, educational site dedicated to exploring sustainable building, teaching and education in sustainability. (Teleport Link)
Deep Down Virtual Mine
A 3D game to educate about coal mining and its impact on people and the land (My review, official website, Teleport Link)
Etopia
An imagined eco-friendly world (Teleport Link)
NOAA’s Meteroa Island
US government sponsored weather and environment focused sim. (Teleport Link)
OneClimate Island
Virtual space of the group OneClimate.net (Teleport Link)
Svarga
Much celebrated, "ancient" (by SL standards) sim created to show how a virtual eco-system might operate (NWN story on Svarga , teleport link.)
Updated May 2011.
