<a href="//commons.wikimedia.org/wiki/Baleen" title="Baleen">Baleen</a>. I believe this to be in the Public Domain.
Anon at NOAA Fisheries Service
5 January 2004 (according to <a href="https://en.wikipedia.org/wiki/Exchangeable_image_file_format" class="extiw" title="en:Exchangeable image file format">Exif</a> data)
<a rel="nofollow" class="external free" href="http://swfsc.noaa.gov/textblock.aspx?Division=PRD&amp;ParentMenuId=229&amp;id=1417">http://swfsc.noaa.gov/textblock.aspx?Division=PRD&amp;ParentMenuId=229&amp;id=1417</a> ; a US goverment site.