Sue Daly / Tube worm / Double sprial worm (Bispira volutacornis) Channel Islands, UK June

Sue Daly / Jewel sea anemones (Corynactis viridis) Channel Islands, UK May

Georgette Douwma / Feather duster worms (Sabellidae) filter feeders, Rinca, Komodo National Park, Indonesia

Georgette Douwma / Sea pen porcelain crab (Porcellanella triloba) in Sea pen (Virgularia gustaviana) Porcelain crabs are filter feeders and climb in the sea pen to take advantage of current. When the Sea pen retreats in...

Georgette Douwma / Sea pen porcelain crab (Porcellanella triloba) in Sea pen (Virgularia gustaviana) Porcelain crabs are filter feeders and climb in the sea pen to take advantage of current. When the Sea pen retreats in...

Georgette Douwma / Pen crab (Porcellanella triloba) resting in Sea pen (Pteroeides) to feed on plankton, Rinca, Indonesia

Norbert Wu / Underwater seamount covered in invertebrate life including sponges, soft corals, ascidians, and barnacles, all of which are filter feeders, Alaska