Limpet, <i><a href="//commons.wikimedia.org/wiki/Patella_caerulea" title="Patella caerulea">Patella caerulea</a></i>, Family: Patellidae, Location: Italy, Sardinia, Arbatax.
<a href="//commons.wikimedia.org/wiki/User:Holleday" title="User:Holleday">Holger Krisp</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>