Sponges trap and filter out their what as the water passes by.
gemmules snails mucus Worms matter eggs food marine
A B C D E F G H
Clams are filter feeders and thus trap and filter out their food as the water passes by.
Sponges trap and filter out their food as the water passes by.
Sponges trap and filter out their what as the water passes by. (A) gemmules (B) snails (C) mucus (D) Worms (E) matter (F) eggs (G) food (H) marine