http://www.seaslugforum.net/showall/noalsp1
http://www.seaslugforum.net/factsheet/noalsp2
http://www.seaslugsofhawaii.com/species/Noalda-sp2-a.html
http://slugsite.us/bow2007/nudwk707.htm
http://rfbolland.com/okislugs/noal_sp1.html
http://www.nudipixel.net/species/noalda_sp/
http://rfbolland.com/okislugs/noal_sp2.html
http://www.nudibranch.org/Sulawesi Sea Slugs/html/sss-sea-slugs.html
http://rfbolland.com/okislugs/noal_sp3.html
http://www.medslugs.de/E/Pac-NW/Noalda_sp_01/Selection.htm
http://www.Philippine-Sea-Slugs.com/Cephalaspidea/Noalda_sp_01.htm
http://www.medslugs.de/E/Pac-W/Noalda_sp_01/Selection.htm
http://www.umiushi-zukan.com/eng/list_pic.php?ssw=g&kind_id=1238
http://www.umiushi-zukan.com/eng/list_pic.php?ssw=g&kind_id=1246
http://www.umiushi-zukan.com/eng/list_pic.php?ssw=g&kind_id=1272
http://www.medslugs.de/E/Ind-E/Noalda_sp_01/Selection.htm
http://www.Philippine-Sea-Slugs.com/Cephalaspidea/Noalda_sp_02.htm
http://www.medslugs.de/E/Pac-W/Noalda_sp_02/Selection.htm
http://www.Philippine-Sea-Slugs.com/Cephalaspidea/Noalda_sp_03.htm
http://slugsite.us/bow2007/nudwk979.htm
http://www.medslugs.de/E/Ind-E/Noalda_sp_02/Selection.htm