Shapes of tails of some major sharks
<a href="//commons.wikimedia.org/wiki/User:Chris_huh" title="User:Chris huh">Chris huh</a>, translated by <a href="//commons.wikimedia.org/wiki/User:Achim_Raschka" title="User:Achim Raschka">Achim Raschka</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Achim_Raschka" title="User talk:Achim Raschka"><span class="signature-talk">talk</span></a>)
<span class="int-own-work" lang="en">Own work</span>