http://guamreeflife.com/htm/inverts/opistos/gastropterids.htm#Sbilealbum
http://slugsite.us/bow2007/nudwk912.htm
http://www.Philippine-Sea-Slugs.com/Cephalaspidea/Sagaminopteron_bilealbum.htm
http://www.medslugs.de/E/Pac-W/Sagaminopteron_bilealbum/Selection.htm