http://www.habitas.org.uk/marinelife/species.asp?item=W14670
http://www.medslugs.de/E/Med/Trinchesia_caerulea/Selection.htm
http://www.marenostrum.org/opistobranquios/ccaerulea/cerulea.htm
http://www.bio.bris.ac.uk/teaching/units/b11000/nudi7.htm
http://www.nudibranch.org/Scottish%20Nudibranchs/cuthona-caerulea.html
http://members.aol.com/westaslugs/Aeolnudis.html
http://www.seaslugforum.net/showall/cuthcaer
http://www.ugr.es/~lstocino/cuthona_caerulea.htm
http://www.nembro.info/uk_cuthona_caerulea.html
http://www.jaxshells.org/acae.htm
http://www.medslugs.de/E/Atl-E/Trinchesia_caerulea/Selection.htm
http://www.seawater.no/fauna/Blotdyr/caerulea.htm
http://www.medslugs.de/E/Atl-NE/Trinchesia_caerulea/Selection.htm
http://opistobranquis.info/en/guia/nudibranchia/dexiarchia/aeolidida/cuthona-caerulea/