Cephalaspidea. <i>Chelidonura varians</i>. Taken at Tasik Ria, Northe Sulawesi, Indonesia.
<a href="//commons.wikimedia.org/wiki/User:Jnpet" title="User:Jnpet">Jens Petersen</a>
<span class="int-own-work" lang="en">Own work</span>