The blow of the Blue Whale
NOAA Fisheries (<a href="//commons.wikimedia.org/wiki/User:ToB" title="User:ToB">TBjornstad</a> 11:19, 18 April 2007 (UTC))
<a rel="nofollow" class="external text" href="http://swfsc.nmfs.noaa.gov/PRD/">Protected Resouces Division, Southwest Fisheries Science Center, La Jolla, California</a>