The Elkhorn Slough habitat shapefiles came from Rikk Kvitek's shop at Moss Landing Marine Labs.  The habitat classification was done by MLML and ground-truthed with the help of graduate students.  I am told that the spatial accuracy may not be 100%.  USE WITH CAUTION.  Refer any questions about the data to Rikk at California State University Monterey Bay via e-mail at rikk_kvitek@monterey.edu.