Syllis ramosa
... that the sponge-dwelling branched worm Syllis ramosa has a single mouth and many anuses?
... that the <a href="./Hexactinellid" id="mwAaU" rel="mw:WikiLink" title="Hexactinellid">sponge-dwelling</a> branched worm <i id="mwAaY"><b id="mwAac"><a href="./Syllis_ramosa" id="mwAag" rel="mw:WikiLink" title="Syllis ramosa">Syllis ramosa</a></b></i> has a single mouth and many <a href="./Anus" id="mwAak" rel="mw:WikiLink" title="Anus">anuses</a>?