http://rfbolland.com/okislugs/siphtigr.html
http://rfbolland.com/okislugs/siphtig2.html
http://online.divers.ne.jp/ono/seaslug2/room2-1.html
http://www.seaslugforum.net/showall/siphtigr
http://www.medslugs.de/E/Pac-W/Siphopteron_tigrinum/Selection.htm
http://www.Philippine-Sea-Slugs.com/Cephalaspidea/Siphopteron_tigrinum.htm
http://www.umiushi.info/photo_species/photo_splist_eng.php?sopt=0&loc=0000
http://www.medslugs.de/E/Pac-NW/Siphopteron_tigrinum/Selection.htm
http://www.nudibranch.com.au/pages/00542.htm
http://www.umiushi-zukan.com/eng/list_pic.php?ssw=g&kind_id=38
http://slugsite.us/bow2007/nudwk864.htm
http://www.medslugs.de/E/Ind-E/Siphopteron_tigrinum/Selection.htm