Beluga whale.
Dr. Kristin Laidre, Polar Science Center, UW.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/51647007@N08">NOAA Photo Library</a>: <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/noaaphotolib/5277232869/">anim1108</a>