yellow tube sponge
... that the yellow tube sponge appears bright greenish yellow in deep water because it emits fluorescent light?
... that the <b id="mwB0g"><a href="./Aplysina_insularis" id="mwB0k" rel="mw:WikiLink" title="Aplysina insularis">yellow tube sponge</a></b> appears bright greenish yellow in deep water because it emits fluorescent light?