http://www.seaslugforum.net/showall/thorpurp
http://www.cosmos.ne.jp/~breach/slug%20full%204/nudi%20full106.html
http://online.divers.ne.jp/ono/seaslug5/room5-7.html
http://slugsite.us/bow/nudwk321.htm
http://slugsite.us/bow/zam_05.htm
http://www.underwaterkwaj.com/nudi/chromodorids/e013.htm
http://tahitinudi.jimdo.com/liste-des-espèces/thorunna-purpuropedis/
http://www.umiushi-zukan.com/eng/list_pic.php?ssw=g&kind_id=356