The lichen <i><a href="//commons.wikimedia.org/wiki/Caloplaca_marina" title="Caloplaca marina">Caloplaca marina</a></i> at Ardrossan North Beach, Ayrshire, Scotland.
<a href="//commons.wikimedia.org/wiki/User:Rosser1954" title="User:Rosser1954">Rosser1954</a> Roger Griffith
2009-06-03
<span class="int-own-work" lang="en">Own work</span>