http://www.seaslugforum.net/showall/facebile
http://www.sea-slug.com/species/umiusi174.htm
http://www.h.do-up.com/home/takayan/takapage87.htm
http://www.umiushi.info/photo_species/photo_splist_eng.php?sopt=0&loc=0000
http://www.medslugs.de/E/Pac-NW/Facelina_bilineata/Selection.htm
http://www.umiushi-zukan.com/eng/list_pic.php?ssw=g&kind_id=643