Diagram of a syconoid <a href="https://en.wikipedia.org/wiki/sponge" class="extiw" title="w:sponge">sponge</a>. (Derivative of <a href="//commons.wikimedia.org/wiki/File:Sea_sponge.svg" title="File:Sea sponge.svg">File:Sea sponge.svg</a>, with humor removed.) Based off of <a href="//commons.wikimedia.org/wiki/File:Porifera_body_structures_01.png" title="File:Porifera body structures 01.png">File:Porifera body structures 01.png</a> <a rel="nofollow" class="external text" href="http://classconnection.s3.amazonaws.com/253/flashcards/676253/jpg/syconoid_canal_system1316490931780.jpg">2</a>, <a rel="nofollow" class="external text" href="http://paws.wcu.edu/dperlmutr/sponge%20type.JPG">3</a> and some others.
<a href="//commons.wikimedia.org/wiki/User:Kelvinsong" class="mw-redirect" title="User:Kelvinsong">Kelvinsong</a>
CC BY-SA 3.0
<a href="//commons.wikimedia.org/wiki/File:Sea_sponge.svg" title="File:Sea sponge.svg">File:Sea sponge.svg</a>