Calliostoma zizyphinum

Family : Calliostomatidae

 

Calliostoma zizyphinum, Calliostomatidae

The Calliostoma zizyphinum is a gastropod present among the coastal rocks of Mediterranean and of Atlantic up to the North Sea. The head, well distinct, has the eyes placed at the base on the long tentacles carried by a just hinted peduncle. The showy foot has 4-5 thin tentacles per side and a rhipidoglossan radula. It mainly nourishes of algae but also, failing them, of sponges, ascidia and other benthic invertebrates. The shell, often orange pink, can be also yellowish or violet. Conical and pointed, almost as tall as the diametre, reaches about 3 cm © Giuseppe Mazza

 

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