http://slugsite.us/bow/nudiwkps/nudiwk25.html
http://www.wgn.net/~fabio/gallery/nudibranch6.htm
http://www.oceanphotos.com/d442-1.htm
http://www.ph.utexas.edu/~read/aquashot/uw-pix/dreww/hilton.html
http://www-seafood.ucdavis.edu/images/fish/nudibranch/45058.jpg
http://www.sailordude.com/Scuba/cw2/phidiana.htm
http://cinms.nos.noaa.gov/slides/images/slides5b.htm
http://www.vibrantsea.net/hiltoni24_channel2.html
http://www.crl.com/~divrdan/hermi.html
http://www.metridium.com/monterey/nudibranchs/phidiana.html
http://www.lumigenic.com/photo/pages/195U15.bio.html
http://www.seaslugforum.net/showall/phidhilt
this website exists no more:
http://www.biology.ucsc.edu/classes/bio161l/NUDI/philtoni.html
http://www.medslugs.de/E/Pac-NE/Phidiana_hiltoni/Selection.htm
http://www.underwaterkwaj.com/nudi/california/c012.htm
http://smg.photobucket.com/albums/v109/divinman/Nudibranch%20archive/?start=120
http://scottpenny.smugmug.com/gallery/3881249_R9eMK/6
http://slugsite.us/bow2007/nudwk725.htm
http://slugsite.us/bow2007/nudwk735.htm
http://www.nudipixel.net/species/phidiana_hiltoni/