Halisarca caerulea
... that the sponge Halisarca caerulea forms part of a "sponge loop", absorbing large quantities of dissolved organic carbon, and returning the carbon to the sea as detritus?
... that the sponge <i id="mwAho"><b id="mwAhs"><a href="./Halisarca_caerulea" id="mwAhw" rel="mw:WikiLink" title="Halisarca caerulea">Halisarca caerulea</a></b></i> forms part of a "sponge loop", absorbing large quantities of <a href="./Dissolved_organic_carbon" id="mwAh0" rel="mw:WikiLink" title="Dissolved organic carbon">dissolved organic carbon</a>, and returning the carbon to the sea as <a href="./Detritus" id="mwAh4" rel="mw:WikiLink" title="Detritus">detritus</a>?