{{Short description|Species of gastropod}} {{Use dmy dates|date=March 2021}} {{Speciesbox | image = Onchidella marginata (10.7717-peerj.1963) Figure 2 (cropped).png | image_caption = | taxon = Onchidella marginata | authority = (Couthouy in Gould, 1852) | synonyms_ref = <ref name="WoRMS" /> | synonyms = * ''Onchidella chilensis'' (Huppé in Gay, 1854) * Onchidella juanfernandeziana (Wissel, 1898) * ''Onchidium chilense'' Huppé in Gay, 1854 * ''Onchidium lanuginosum'' Huppé in Gay, 1854 * ''Oncidiella coquimbensis'' Plate, 1894 * ''Oncidiella juanfernandeziana'' Wissel, 1898 * ''Oncidiella juan-fernandeziana'' Wissel, 1898 * ''Peronia marginata'' Couthouy in Gould, 1852 }}
'''''Onchidella marginata''''' is a species of air-breathing sea slug, a shell-less marine pulmonate gastropod mollusk in the family Onchidiidae.<ref name="WoRMS">{{WRMS species|509919 |''Onchidella marginata'' (Couthouy in Gould, 1852)||30 September 2010}}</ref>
==Description== ''O marginata'' undergoes direct-development.<ref name=Cumming-2014 />
==Distribution== ''O. marginata'' is found in southern Chile, the Falkland Islands, and New Zealand and its subantarctic islands.<ref name=Cumming-2014>{{cite journal|last1=Cumming|first1=Rebecca A.|last2=Nikula|first2=Raisa|last3=Spencer|first3=Hamish G.|last4=Waters|first4=Jonathan M.|year=2014|title=Transoceanic genetic similarities of kelp-associated sea slug populations: long-distance dispersal via rafting?|journal=Journal of Biogeography|volume=41|pages=2357–2370|doi=10.1111/jbi.12376}}</ref>
==Ecology== ''O. marginata'' is associated with the southern bull kelp ''Durvillaea antarctica''. When the holdfasts of the kelp detach from substrates they float and can raft over vast distances.<ref name=Cumming-2014 /> Based on genetic data, the geographically distant populations of ''O. marginata'' are estimated to be closely related, and it has been suggested that the dispersal of the species far across the Southern Ocean has been facilitated by rafts of ''D. antarctica.''<ref name=Cumming-2014 />
==References== {{Reflist}}
{{Taxonbar|from=Q7091973}}
Category:Onchidiidae Category:Gastropods described in 1852
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