healthy <i><a href="//commons.wikimedia.org/wiki/Category:Acropora_prolifera" title="Category:Acropora prolifera">Acropora prolifera</a></i> coral, photographed near Lee Stocking Island, Bahamas
Mark Eakin, NOAA
<a rel="nofollow" class="external free" href="http://www.magazine.noaa.gov/stories/mag206.htm">http://www.magazine.noaa.gov/stories/mag206.htm</a>