Pack ice in the Beaufort Sea.
Luke Jones (Accretion Disc on Flickr) <a rel="nofollow" class="external free" href="https://www.flickr.com/photos/befuddledsenses/">https://www.flickr.com/photos/befuddledsenses/</a>
CC BY 2.0
<a rel="nofollow" class="external free" href="https://www.flickr.com/photos/befuddledsenses/9065711264/">https://www.flickr.com/photos/befuddledsenses/9065711264/</a>