http://slugsite.us/steve/steve20.htm
http://slugsite.us/bow/pan/picta_pv.html
http://slugsite.us/bow/pacific/dirona1.html
this website exists no more:
http://www.biology.ucsc.edu/classes/bio161l/NUDI/dpicta.html
http://www.seaslugforum.net/showall/diropict
http://slugsite.us/bow/nudwk232.htm
http://slugsite.us/bow/nudwk352.htm
http://slugsite.us/bow/bow_352b.htm
http://slugsite.us/bow/bow_352c.htm
http://slugsite.us/bow/bow_352f.htm
http://slugsite.us/bow/bow_352g.htm
http://www.medslugs.de/E/Pac-NE/Dirona_picta/Selection.htm
http://smg.photobucket.com/albums/v109/divinman/Nudibranch%20archive/?start=40
http://scottpenny.smugmug.com/gallery/3881249_R9eMK/4
http://www.nudipixel.net/species/dirona_picta/