Save the Bay – www.savesfbay.org
Save The Bay seeks to preserve restore and protect the San Francisco Bay and Sacramento/San Joaquin Delta Estuary as a healthy and biologically diverse ecosystem essential to the well-being of the human and natural communities it sustains. Save the Bay has a variety of wetlands restoration projects, a native plant nursery and other projects that students can help with. Their web site has a lot of information.
Athenian Community Service Blog 