http://www.umiushi.info/photo_species/photo_splist_eng.php?sopt=0&loc=0000
http://rfbolland.com/okislugs/naka_sp1.html
http://www.medslugs.de/E/Pac-NW/Nakamigawaia_sp_01/Selection.htm
http://www.medslugs.de/E/Pac-NW/Nakamigawaia_sp_02/Selection.htm
http://www.cosmos.ne.jp/~ononini/seaslug_addenda4/add4_09.html
http://www.seaslugsofhawaii.com/species/Nakamigawaia-sp1-a.html
http://www.umiushi-zukan.com/eng/list_pic.php?ssw=g&kind_id=16
http://www.medslugs.de/E/Pac-SW/Nakamigawaia_sp_03/Selection.htm