zooxanthellae
... that a bleached coral that has expelled its zooxanthellae may be recolonised by others of a different species?
... that a <a href="./Coral_bleaching" id="mwB_c" rel="mw:WikiLink" title="Coral bleaching">bleached coral</a> that has expelled its <b id="mwB_g"><a href="./Zooxanthellae" id="mwB_k" rel="mw:WikiLink" title="Zooxanthellae">zooxanthellae</a></b> may be recolonised by others of a different species?