http://www.rfbolland.com/okislugs/notaindi.html
http://www.medslugs.de/E/Ind-NW/Notarchus_indicus/Selection.htm
http://www.seaslugforum.net/showall/notaindi
http://www.ne.jp/asahi/kappa-kuri/miyamoto/OSEHOO/umiushi82.html
http://www.umiushi.info/photo_species/photo_splist_eng.php?sopt=0&loc=0000
http://www.medslugs.de/E/Pac-NW/Notarchus_indicus/Selection.htm
http://www.vibrantsea.net/notarchus14_anilao16.htm
http://www.Philippine-Sea-Slugs.com/Anaspidea/Notarchus_indicus.htm
http://www.underwaterkwaj.com/nudi/anaspideans/e536.htm
http://www.medslugs.de/E/Pac-E/Notarchus_indicus/Selection.htm
http://www.seaslugsofhawaii.com/species/Notarchus-indicus-a.html
http://www.medslugs.de/E/Pac-W/Notarchus_indicus.htm
http://www.nudipixel.net/species/notarchus_indicus/
http://www.medslugs.de/E/Ind-E/Notarchus_indicus/Selection.htm
http://www.nudibranch.org/Sulawesi Sea Slugs/html/sss-sea-slugs.html
http://www.umiushi-zukan.com/eng/list_pic.php?ssw=g&kind_id=123
http://opistobranquis.info/en/guia/anaspidea/notarchus-indicus/
https://www.vibrantsea.net/notarchus8176_anilao2019.htm