http://www.pictonb.freeserve.co.uk/nudibranchs/hanunc.html
http://www.ugr.es/~lstocino/pagina_nueva_5.htm
http://www.medslugs.de/E/Med/Hancockia_uncinata.htm
http://www.seaslugforum.net/factsheet.cfm?base=hancunci
http://www.scottishnudibranchs.co.uk/html/hancockia-uncinata-01.html
http://www.habitas.org.uk/marinelife/species.asp?item=W12620