Part of the Protected Areas Geographic Information System (PAGIS) project. The Coastal Services Center, in cooperation with the NERR sites, has created a digital boundary file for each site. Download boundary data layers and associated attributes. The boundary files are provided to the user in two geographic information system (GIS) formats, ARC/INFO Export or ArcView Shapefile format.
http://www.csc.noaa.gov/pagis/html/download.htm
more info also at