BIOTIC Species Information for Caecum armoricum
Researched byNicola White Data supplied byMarLIN
Refereed byDennis R. Seaward
General Biology
Growth formCylindrical
Feeding methodSub-surface deposit feeder
Environmental positionInterstitial
Typical food typesvegetable detritus and ?bacterial and diatom film. HabitFree living
BioturbatorNot relevant FlexibilityNone (< 10 degrees)
FragilityRobust SizeVery small(<1cm)
HeightInsufficient information Growth RateInsufficient information
Adult dispersal potentialNot researched DependencyIndependent
General Biology Additional InformationLittle is known of the biology of this species. Early shell form is a spiral disc of about one whorl. Subsequent growth is tangential, slightly curved and tapering. As the shell tube lengthens, the animal's body only occupies the newer part of the shell near the mouth. A septum is laid down closing off the unwanted part of the shell which then breaks off, keeping the shell small, this is repeated throughout the animals life. It is presumably an adaptation to interstitial life.
Biology References Seaward, 1987,
About MarLIN | Contact, Enquiries & Feedback | Terms & Conditions | Funding | Glossary | Accessibility | Privacy | Sponsorship

Creative Commons License BIOTIC (Biological Traits Information Catalogue) by MarLIN (Marine Life Information Network) is licensed under a Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales License. Permissions beyond the scope of this license are available at Note that images and other media featured on this page are each governed by their own terms and conditions and they may or may not be available for reuse. Based on a work at