http://slugsite.us/bow/nudiwk07.htm
this website exists no more:
http://www.biology.ucsc.edu/classes/bio161l/NUDI/fpricei.html
http://www.medslugs.de/E/Pac-NE/Apata_pricei/Selection.htm
http://smg.photobucket.com/albums/v109/divinman/Nudibranch%20archive/?start=80
http://scottpenny.smugmug.com/gallery/3881249_R9eMK/4
http://www.nudipixel.net/species/flabellina_pricei/
http://marliwakeling.jalbum.net/Nudibranchs/slides/Flabellina pricei.html