An extreme closeup of a colony of Pillar coral (<i><a href="//commons.wikimedia.org/w/index.php?title=Dendogyra_cylindrus&amp;action=edit&amp;redlink=1" class="new" title="Dendogyra cylindrus (page does not exist)">Dendogyra cylindrus</a></i>).<br>Pillar Coral B&amp;W Macro
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/laszlo-photo/">LASZLO ILYES (laszlo-photo)</a> from Cleveland, Ohio, USA
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/40467171@N00/151643929">Flickr</a>