http://www.seaslugforum.net/factsheet.cfm?base=ilbiilbi
http://www.gastropods.com/0/Shell_32870.html
http://www.bluering.org.au/Opisthobranchs-CapeBridgewater2190.htm
http://www.medslugs.de/E/Pac-SW/Ilbia_ilbi/Selection.htm