Hermaea bifida (Montagu, 1815) [Doris]

http://www.seaslugforum.net/showall/hermbifi
http://www.medslugs.de/E/Med/Hermaea_bifida/Selection.htm
http://www.nudibranch.org/Scottish%20Nudibranchs/hermaea-bifida.html
http://www.nembro.info/Opisthobranchia/uk_hermaea_bifida1.html
http://www.medslugs.de/E/Atl-E/Hermaea_bifida/Selection.htm
http://www.medslugs.de/E/Atl-NE/Hermaea_bifida/Selection.htm
http://www.nudipixel.net/species/hermaea_bifida/
http://opistobranquis.info/en/guia/sacoglossa/hermaea-bifida/