Pencil urchin - Stylocidaris affinis
Pencil urchin is certainly one of the most curious and most characteristic species of Mediterranean urchins. Its common name derives from the shape of its thorns which resemble a classic pencil or "Lapis" as we say in Tuscany. However, these thorns are quite fragile as they are funny and when you meet them it is always better to be careful not to touch them to prevent them from coming off ...







