http://www.seaslugforum.net/showall/phylkoeh
https://www.Philippine-Sea-Slugs.com/Nudibranchia/Cladobranchia/Phyllodesmium_koehleri.htm
http://www.rfbolland.com/okislugs/phylkoeh.html
http://slugsite.us/bow2007/nudwk625.htm
http://www.medslugs.de/E/Pac-W/Phyllodesmium_koehleri/Selection.htm
http://www.nudipixel.net/species/phyllodesmium_koehleri/
http://www.umiushi-zukan.com/eng/list_pic.php?ssw=g&kind_id=1645
https://www.vibrantsea.net/phyllodesmium8683_anilao2019.htm