gray encrusting sponge
... that human activity has helped the gray encrusting sponge to disperse across the Pacific?
... that human activity has <a href="./Introduced_species" id="mwBPY" rel="mw:WikiLink" title="Introduced species">helped</a> the <b id="mwBPc"><a href="./Gelliodes_wilsoni" id="mwBPg" rel="mw:WikiLink" title="Gelliodes wilsoni">gray encrusting sponge</a></b> to <a href="./Biological_dispersal" id="mwBPk" rel="mw:WikiLink" title="Biological dispersal">disperse</a> across the Pacific?