intermediate valley coral
... that sponges, worms, and molluscs bore into the stony skeleton of the intermediate valley coral?
... that <a href="./Cliona" id="mwCp8" rel="mw:WikiLink" title="Cliona">sponges</a>, <a href="./Polychaete" id="mwCqA" rel="mw:WikiLink" title="Polychaete">worms</a>, and <a href="./Bivalvia" id="mwCqE" rel="mw:WikiLink" title="Bivalvia">molluscs</a> bore into the stony skeleton of the <b id="mwCqI"><a href="./Oulophyllia_crispa" id="mwCqM" rel="mw:WikiLink" title="Oulophyllia crispa">intermediate valley coral</a></b>?