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Louise Allcock, National University of Ireland, Galway, Ireland
Marc Eléaume, Muséum National d'Histoire Naturelle, Paris, France
Giulia La Bianca, National University of Ireland, Galway, Ireland
Raissa Hogan, National University of Ireland, Galway, Ireland
Martin White, National University of Ireland, Galway, Ireland
Crinoid fauna of the NE Atlantic

During two cruises aboard RV Celtic Explorer to the Celtic margin, crinoid imagery and specimens were collected using the Irish deep-water ROV Holland I.  The cruises explored two submarine canyon systems comprising two unnamed canyons to the north of the Porcupine Bank and the Whittard Canyon, a dendritic system south of the Goban Spur.  We observed over 8000 individual crinoids representing species from eight families.  Voucher specimens of Anachalypsicrinus nefertiti, Atelecrinus helgae, Endoxocrinus (Diplocrinus) wyvillethomsoni, Koehlermetra porrecta, Neocomatella europaea, Pentametrocrinus atlanticus, Porphyrocrinus thalassae, Zeuctocrinus gisleni were collected, allowing confirmation of the video identifications.  We observed a further 900 specimens that could only be identified as ‘comatulid sp.’ or ‘stalked crinoid sp.’ due to poor imagery or lack of identifying characteristics.  We describe the identifying features of the species collected, their habitat, and report their abundance.  We also provide in situ photographs of every species to facilitate future identifications by non specialists.


[Image caption: Endoxocrinus wyvillethomsoni in the Whittard Canyon photographed by ROV Holland I]




Theme 3: Biological patterns in submarine canyons: role of scale and heterogeneity
Poster Presentation
Crinoidea, Echinodermata, Whittard Canyon