http://www.pictonb.freeserve.co.uk/nudibranchs/oncbil.html
http://www3.bc.sympatico.ca/kerryw/creature/brnbar.htm
http://slugsite.us/bow/pacific/mellata.html
http://slugsite.us/bow/nudiwkps/nudiwk34.html
http://www-seafood.ucdavis.edu/images/fish/nudibranch/45080.jpg
http://www.asterisk.no/~emil/nudibranchia/onchidoris_bilamellata.htm
http://www.nudibranch.org/Scottish%20Nudibranchs/onchidoris-bilamellata.html
http://www.seaslugforum.net/showall/onchbila
http://www.habitas.org.uk/marinelife/species.asp?item=W13320
http://www.medslugs.de/E/Atl-NE/Onchidoris_bilamellata/Selection.htm
http://www.medslugs.de/E/Pac-NE/Onchidoris_bilamellata/Selection.htm
http://www.seawater.no/fauna/Blotdyr/bilamellata.htm
http://www.guiamarina.com/gallery/v/Baltic+Sea/03+Animals/05+Mollusca/Opisthobranchia/Onchidoris+bilamellata/
http://www.nudipixel.net/species/onchidoris_bilamellata/
http://marliwakeling.jalbum.net/Nudibranchs/slides/Onchidoris bilamellata.html