http://www.edge-of-reef.com/opistobranchi/opi/OPiDotoussien.htm
http://www.seaslugforum.net/factsheet.cfm?base=dotoussi
http://www.medslugs.de/E/Pac-W/Doto_ussi.htm
http://www.Philippine-Sea-Slugs.com/DENDRONOTINA/Doto_ussi.htm