Wiktionary
filter feeders
alt. (plural of filter feeder English) n. (plural of filter feeder English)
Usage examples of "filter feeders".
The Ordovician extinction of 440 million years ago cleared the oceans of a lot of immobile filter feeders and, somehow, created conditions that favored darting fish and giant aquatic reptiles.
They're a ghost-memory of alien life, an order of thermophilic quasi fungi with hyphae ridged in actin/myosin analogues, muscular and slippery filter feeders that eat airborne unicellular organisms.