Threat display of a grey reef shark. The postures become more exaggerated as the danger perceived by the shark increases.
<ul><li><a href="//commons.wikimedia.org/wiki/File:Shark_threat_display.svg" title="File:Shark threat display.svg">Shark_threat_display.svg</a>: Chris_huh</li>
<li>derivative work: Andrea.dematteis.1987</li></ul>
2010-04-18 19:35
<ul><li><a href="//commons.wikimedia.org/wiki/File:Shark_threat_display.svg" title="File:Shark threat display.svg">Shark_threat_display.svg</a></li></ul>