Mediterranean fanworm, Feather duster worm, European fan worm or Pencil worm; <i><a href="//commons.wikimedia.org/w/index.php?title=Sabella_spallanzanii&amp;action=edit&amp;redlink=1" class="new" title="Sabella spallanzanii (page does not exist)">Sabella spallanzanii</a></i>; Location: Croatia, Istria, Funtana
<a href="//commons.wikimedia.org/wiki/User:Holleday" title="User:Holleday">Holger Krisp</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>