<p>Red pencil urchin (<i><a href="//commons.wikimedia.org/wiki/Heterocentrotus_mamillatus" title="Heterocentrotus mamillatus">Heterocentrotus mamillatus</a></i>), Papahānaumokuākea Marine National Monument
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Credit: James Watt.  Please contact <a rel="nofollow" class="external text" href="http://www.oceanstock.com">www.oceanstock.com</a> for image usage.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/52133016@N08">U.S. Fish &amp; Wildlife Service - Pacific Region's</a>
CC BY 2.0
<p><a rel="nofollow" class="external text" href="https://www.flickr.com/photos/usfwspacific/4967557671/">Red pencil urchin - Papahānaumokuākea Marine National Monument</a> <a rel="nofollow" class="external free" href="http://www.magazine.noaa.gov/stories/mag203.htm">http://www.magazine.noaa.gov/stories/mag203.htm</a>
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<ul><li>Uploaded by <a href="//commons.wikimedia.org/wiki/User:PDTillman" class="mw-redirect" title="User:PDTillman">PDTillman</a></li></ul>