Ophioderma longicaudum

Smooth brittlestar

Ophioderma longicaudum

Ile de Groix, France, 9 meters, ML

Ophioderma longicaudum

Concarneau Bay, France, 3 meters, 2008, WBN


Ophioderma longicaudum is a brittle star of up to 15 cm in diameter with a central disc of 2,5 cm in diameter. The disc surface is smooth, covered on its two sides by tiny spherical grains visible under magnifying glass. The long smooth arms are cylindrical and tip-tapered. The colour is red to dark brown, the arms may have clearer bands. It lives on rocky bottoms and can move quickly thanks to the undulatory movements of its arms.


Ophioderma longicaudum is found from surface to 70 m deep in the Mediterranean Sea and in the Atlantic up to the Western Brittany coasts where it is rather rare.

Image satellite: © Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.

Données de distribution : Ophioderma longicaudum in GBIF Secretariat (2019). GBIF Backbone Taxonomy. Checklist dataset accessed via on 2022-08-10.


Source : World Register of Marine Species

! La connexion au serveur WoRMS est momentanément indisponible !


Text : Anne Bay-Nouailhat © 2007 - 2022.

Photos : © Maurice loir, Wilfried Bay-Nouailhat. Published with his kind permission.
Websites and reference works : Consult bibliography

How to cite this page

Bay-Nouailhat A., December 2007, Description of Ophioderma longicaudum, [On line], consulted on 2022 August 10.


Photographie de Anne Bay-Nouailhat

Anne Bay-Nouailhat

Project manager in marine environment
Professional diver - Naturalist

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