Coral reef off Sharm el-Sheikh &amp; Naama Bay, Red Sea, with <i><a href="//commons.wikimedia.org/w/index.php?title=Diadema&amp;action=edit&amp;redlink=1" class="new" title="Diadema (page does not exist)">Diadema</a> sp.</i> urchin.
Hannes Grobe/AWI
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>