Antarctic scallop
... that a single Antarctic scallop was found to have 10 different species of demosponge living on its shell?
... that a single <b id="mwCIo"><a href="./Adamussium" id="mwCIs" rel="mw:WikiLink" title="Adamussium">Antarctic scallop</a></b> was found to have 10 different <a href="./Species" id="mwCIw" rel="mw:WikiLink" title="Species">species</a> of <a href="./Demosponge" id="mwCI0" rel="mw:WikiLink" title="Demosponge">demosponge</a> living on its shell?