http://rfbolland.com/okislugs/hypsemma.html
http://www.seaslugforum.net/showall/hypsemma
http://www.vibrantsea.net/emma19_anilao8.html
http://www.medslugs.de/E/Pac-W/Hypselodoris_emma/Selection.htm
https://www.Philippine-Sea-Slugs.com/Nudibranchia/Doridina/Hypselodoris_emma.htm
http://www.medslugs.de/E/Ind/Hypselodoris_emma/Selection.htm
http://www.medslugs.de/E/Pac-NW/Hypselodoris_emma/Selection.htm
http://www.nudibranch.com.au/pages/9627.htm
http://www.scuba-equipment-usa.com/marine/AUG05/Emmas_Hypselodoris(Hypselodoris_emmae).html
http://www.nudibranch.org/Philippine Sea Slugs/html/nudibranchs/hypselodoris-emma-01.html
http://www.nudipixel.net/species/hypselodoris_emma/
http://www.nudibranch.org/Sulawesi Sea Slugs/html/sss-sea-slugs.html
http://marliwakeling.jalbum.net/Nudibranchs/slides/Hypselodoris emma.html
http://www.umiushi-zukan.com/eng/list_pic.php?ssw=g&kind_id=324
http://www.dragonmouse.com.au/diving/nudibase.php?action=nudidetail&id=52
http://www.medslugs.de/E/Ind-E/Hypselodoris_emma/Selection.htm
https://www.vibrantsea.net/emma8425_anilao2019.htm