Echinus esculentus, the European edible sea urchin or common sea urchin, is a species of marine invertebrate in the Echinidae family.

Echinus esculentus, the European edible sea urchin or common sea urchin, is a species of marine invertebrate in the Echinidae family.

Echinoderms such as the brittle star Ophiothrix fragilis are frequently seen with their arms protruding from rock cracks, whilst the starfish Asterias rubens and the sea urchins Echinus esculentus and Psammechinus miliaris occasionally form part of the community, as does the whelk Buccinum undatum.