http://www.medslugs.de/E/Med/Antiopella_cristata/Selection.htm
http://www.gla.ac.uk/~gbza62/janolus.html
http://www.pictonb.freeserve.co.uk/nudibranchs/jancri.html
http://egersund.asterisk.no/~emil/j-crista.jpg
http://www.asterisk.no/~emil/nudibranchia/janolus_cristatus.htm
http://www.nudibranch.org/Scottish%20Nudibranchs/janolus-cristatus.html
http://www.seaslugforum.net/showall/janocris
http://slugsite.us/bow/wirtz99/plate_5/wirtz_3r.htm
http://gallery.uunet.be/vanmoerpatrick/janolus.htm
http://www.medslugs.de/E/Atl-NE/Antiopella_cristata/Selection.htm
http://www.marenostrum.org/opistobranquios/janolus/index.htm
http://www.medslugs.de/E/Atl-E/Antiopella_cristata/Selection.htm
http://www.scubaportugal.com/UWPhoto/LuisQuinta/Portfolio/Continente/9.html
http://www.ugr.es/~lstocino/janolus_cristatus.htm
http://digilander.iol.it/netofotosub/Pagine/janol.htm
http://www.wttfw.freesurf.fr/biology/biology_liste.php?langue=uk&action=classif#Opistobranchia
http://www.habitas.org.uk/marinelife/species.asp?item=W14310
http://hypselodoris.blogspot.pt/2008/07/janolus-cristatus-delle-chiaje-1841.html
http://opistobranquis.info/en/guia/nudibranchia/dexiarchia/unassigned-dexiarchia/janolus-cristatus/