http://species-identification.org/species.php?species_group=Pelagic_molluscs&selected=beschrijving&menuentry=soorten&record=Limacina%20helicoides
http://www.nmr-pics.nl/Limacinidae/album/index.html
http://species-identification.org/species.php?species_group=pelagic_molluscs&menuentry=soorten&id=288