yellow calcareous sponge
... that the yellow calcareous sponge may be overgrown by other organisms?
... that the <b id="mwA8w"><a class="mw-redirect" href="./Clathrina_canariensis" id="mwA80" rel="mw:WikiLink" title="Clathrina canariensis">yellow calcareous sponge</a></b> may be overgrown by other organisms?