common brittle star
... that the common brittle star is a filter feeder and raises an arm to catch food particles floating by?
... that the <b id="mwAyE"><a href="./Ophiothrix_fragilis" id="mwAyI" rel="mw:WikiLink" title="Ophiothrix fragilis">common brittle star</a></b> <i id="mwAyM">(pictured)</i> is a <a href="./Filter_feeder" id="mwAyQ" rel="mw:WikiLink" title="Filter feeder">filter feeder</a> and raises an arm to catch food particles floating by?