http://www.seaslugforum.net/showall/noumnorb
http://rfbolland.com/okislugs/noumnorb.html
http://www.sea-slug.com/species/umiusi166.htm
http://www.umiushi.info/photo_species/photo_splist_eng.php?sopt=0&loc=0000
http://www.h.do-up.com/home/takayan/takapage377.htm
http://www.medslugs.de/E/Pac-W/Verconia_norba/Selection.htm
http://www.ne.jp/asahi/kappa-kuri/miyamoto/OSEHOO/umiushi214.html
https://www.Philippine-Sea-Slugs.com/Nudibranchia/Doridina/Verconia_norba.htm
http://www.medslugs.de/E/Pac-NW/Verconia_norba/Selection.htm
http://www.vibrantsea.net/norba13_anilao15.htm
http://seaslugs.free.fr/nudibranche/a_nou_norba.htm
http://www.nudibranch.com.au/pages/4331a.htm
http://www.underwaterkwaj.com/nudi/chromodorids/e045.htm
http://www.underwaterkwaj.com/nudi/solomons/s020.htm
http://www.umiushi-zukan.com/eng/list_pic.php?ssw=g&kind_id=342
http://www.medslugs.de/E/Ind-E/Verconia_norba/Selection.htm
http://www.dragonmouse.com.au/diving/nudibase.php?action=nudidetail&id=168
http://www.medslugs.de/E/Ind-SW/Verconia_norba/Selection.htm
http://www.medslugs.de/E/Ind-NW/Verconia_norba/Selection.htm