http://www.seaslugforum.net/showall/okenpell
http://www.diveoz.com.au/nudibranchs/gallery/display_nudibranch.asp?nudi=41
http://www.ne.jp/asahi/kappa-kuri/miyamoto/OSEHOO/umiushi51.html
http://slugsite.us/bow/nudwk275.htm
http://www.underwaterkwaj.com/nudi/hawaii/h217.htm
http://www.seaslugsofhawaii.com/species/Okenia-pellucida-a.html
http://www.nudipixel.net/species/okenia_pellucida/
http://www.daveharasti.com/nelsonbay/seaslugs/pagethree.htm
http://www.medslugs.de/E/Pac-W/Okenia_pellucida/Selection.htm
http://tahitinudi.jimdo.com/liste-des-espèces/okenia-pellucida/
http://www.umiushi-zukan.com/eng/list_pic.php?ssw=g&kind_id=705
http://www.medslugs.de/E/Ind/Okenia_pellucida/Selection.htm
http://www.medslugs.de/E/Ind-NW/Okenia_pellucida/Selection.htm
http://www.medslugs.de/E/Ind-E/Okenia_pellucida/Selection.htm
http://www.medslugs.de/E/Med/Okenia_pellucida/Selection.htm