<p>Crustose lichens decorate arctic rocks like splashes of paint from a Jackson Pollock painting.
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Lichens growing on rocks
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/41585865@N06">Western Arctic National Parklands</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/nps_wear/9849508034/">Splashes of Lichen</a>