http://slugsite.us/steve/steve28.htm
http://www3.bc.sympatico.ca/kerryw/creature/ringed.htm
http://slugsite.us/bow/pacific/diaulula.html
http://diver.ocean.washington.edu/pics/critter/nudibranch3.jpg
http://www.wgn.net/~fabio/gallery/nudibranch4.htm
http://www.ph.utexas.edu/~read/aquashot/uw-pix/dreww/dorid.html
this website exists no more:
http://www.biology.ucsc.edu/classes/bio161l/NUDI/dsandieg.html
http://www.crl.com/~divrdan/whitenudi.html
http://www.seaslugforum.net/showall/diausand
http://www.metridium.com/monterey/nudibranchs/dialula.html
http://www.divewhidbey.com/Sealife5.htm
http://www.vibrantsea.net/diaulula8_barkley4.html
http://www.medslugs.de/E/Pac-NE/Diaulula_sandiegensis/Selection.htm
http://slugsite.us/bow/nudwk287.htm
http://slugsite.us/bow/dia_spt.htm
http://www.photolib.noaa.gov/htmls/libr0429.htm
http://www.underwaterkwaj.com/nudi/california/c002.htm
http://smg.photobucket.com/albums/v109/divinman/Nudibranch%20archive/?start=40
http://scottpenny.smugmug.com/gallery/3881249_R9eMK/3
http://www.nudipixel.net/species/diaulula_sandiegensis/
http://marliwakeling.jalbum.net/Nudibranchs/slides/Diaulula sandigensis.html
http://slugsite.us/bow2007/nudwk983.htm