Echinocardium cordatum

Common heart urchin

Echinocardium cordatum

Morgat, France, 5 meters, 2013, WBN

Echinocardium cordatum

Concarneau Bay, France, 5 meters, 2005, WB


Echinocardium cordatum is a sea urchin that may reach 9 cm in length. The thin test is globular, slightly oval and its upper face is flattened. It is densely covered by yellowish short thin spines. As it lives buried in sand or mud, this type of spines creates a ventilated space between sand and its tegument preventing asphyxiation. It can bury 10 cm deep in sand where it feeds on various micro-organisms.


Echinocardium cordatum is found from 5 m to 200 m deep, in the Atlantic Ocean from Norway to South-Africa, in the English channel, the North Sea and the Mediterranean Sea.

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

Données de distribution : Echinocardium cordatum in GBIF Secretariat (2019). GBIF Backbone Taxonomy. Checklist dataset accessed via on 2022-09-25.


Source : World Register of Marine Species

! La connexion au serveur WoRMS est momentanément indisponible !


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., December 2005, Description of Echinocardium cordatum, [On line], consulted on 2022 September 25.


Photographie de Anne Bay-Nouailhat

Anne Bay-Nouailhat

Project manager in marine environment
Professional diver - Naturalist

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