http://www.ne.jp/asahi/kappa-kuri/miyamoto/OSEHOO/umiushi47.html
http://www.seaslugforum.net/showall/hypssaga
http://www.sea-slug.com/species/umiusi193.htm
http://www.umiushi.info/photo_species/photo_splist_eng.php?sopt=0&loc=0000
http://www.h.do-up.com/home/takayan/takapage375.htm
http://online.divers.ne.jp/rie/seaslug/echizen2002/14.html
http://www.medslugs.de/E/Pac-NW/Hypselodoris_sagamiensis/Selection.htm
http://slugsite.us/bow2007/nudwk627.htm
http://www.nudibranch.com.au/pages/5577b.htm
http://www.scuba-equipment-usa.com/marine/OCT04/Japanese_Hypselodoris(Hypselodoris_sagamiensis).html
https://www.Philippine-Sea-Slugs.com/Nudibranchia/Doridina/Hypselodoris_sagamiensis.htm
http://www.umiushi-zukan.com/eng/list_pic.php?ssw=g&kind_id=584
http://www.dragonmouse.com.au/diving/nudibase.php?action=nudidetail&id=207
http://www.medslugs.de/E/Pac-W/Hypselodoris_sagamiensis/Selection.htm