Stolonica socialis

Orange sea squirt

Stolonica socialis

Glénan Archipelago, France, 9 meters, 2011, WBN

Stolonica socialis

Camaret, France, 10 meters, 2011, WBN

Stolonica socialis

Camaret, France, 20 meters, 2011, WBN


Stolonica socialis is a colonial ascidian of 2 cm high. Up to 300 zooids can be closely connected through a basal stolon to compose a colony. Zooids are ovoid, the test is smooth and its color may vary from brown to yellow-orange. Siphons are terminal, prominent and small, the oral one being slightly larger than the atrial one. The colony is attached to rocks between 5 to 35 meters deep.


Stolonica socialis is found in the Atlantic Ocean from the British coasts to Brittany and in the English Channel.

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

Données de distribution : Stolonica socialis in GBIF Secretariat (2019). GBIF Backbone Taxonomy. Checklist dataset accessed via on 2022-08-15.


Source : World Register of Marine Species

! La connexion au serveur WoRMS est momentanément indisponible !

Page glossary

Zooid : individual, single animal.

Test : or tunic: thick layer secreted by the mantel containing cellulose and protecting the animal.

Oral siphon : opening by which water is drawn in the ascidian.

Atrial siphon : opening through which water is expelled.


Text : Anne Bay-Nouailhat © 2005 - 2022.

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

How to cite this page

Bay-Nouailhat A., January 2005, Description of Stolonica socialis, [On line], consulted on 2022 August 15.


Photographie de Anne Bay-Nouailhat

Anne Bay-Nouailhat

Project manager in marine environment
Professional diver - Naturalist

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