Western Ecological Research Center
Sea otter census data from 1985 to 1994 (ZIP file, 5989 KB)
Sea otter census data from 1995 to 2004 (ZIP file, 7125 KB)
Sea otter census data from 2005 to 2008 (ZIP file, 2992 KB)
Sea otter census data from the 2008 spring surveys (ZIP file, 1445 KB)
Sea otter spring 2008 summary metadata shapefile