Claudio Contreras / Social feather duster worm (Bispira brunnea) Cancun national Park, Caribbean Sea, Mexico, July

Linda Pitkin / 2020VISION / Tube worms (Bispira volutacornis) living between rocks covered in Crustose coralline (Corallinaceae) and red algae (Rhodophyceae), Lundy Island Marine Conservation Zone, Devon, England, UK, May.

Georgette Douwma / Kaleidoscopic image of Variegated feather duster (Bispira variegata), Sabellidae. Puerto Galera, Philippines.

Georgette Douwma / Kaleidoscopic image of Variegated feather duster (Bispira variegata), Sabellidae. Puerto Galera, Philippines.

Georgette Douwma / Kaleidoscopic image of Variegated feather duster (Bispira variegata), Sabellidae. Puerto Galera, Philippines.

Georgette Douwma / Variegated feather duster (Bispira variegata) Sabellidae. Puerto Galera, Philippines.

Georgette Douwma / Variegated feather duster worm (Bispira variegata) Puerto Galera, Philippines.

Sue Daly / Close-up of a Spiral fan worm (Bispira volutacornis) with tentacles moving in the current, Sark, British Channel Islands, UK, June.

Sue Daly / Group of Spiral fan worms (Bispira volutacornis), Sark, British Channel Islands, UK, June.

Georgette Douwma / Feather duster worm (Bispira sp) Lembeh, Sulawesi, Indonesia.

Sue Daly / Spiral Fan Worm (Bispira volutacornis). Maseline Harbour, Sark, British Channel Islands, July.

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

Alex Mustard / Feather duster worms (Bispira brunnea) colony extended and filter feeding in the clear blue waters of The Bahamas, Caribbean Sea.

Sue Daly / Double Spiral Worm (Bispira volutacornis). Channel Islands, UK, July.

Sue Daly / Double Spiral Worm (Bispira volutacornis). Channel Islands, UK, May.

Claudio Contreras / Social feather duster worms (Bispira brunnea) Cancun National Park, Caribbean Sea, Mexico, July

Claudio Contreras / Social feather duster worms (Bispira brunnea) Cancun National Park, Caribbean Sea, Mexico, August

Doug Perrine / Colonial feather duster worms {Bispira brunnea} Dominica, Caribbean

Juergen Freund / Feather duster / tube worm (Bispira sp) with branchiae extended, Indo-pacific

Juergen Freund / Feather duster worm {Bispira brunnea} and Fancoral, Caribbean.

Juergen Freund / Social Feather dusters / Fanworms {Bispira brunnea} Cuba, Caribbean

Juergen Freund / Social feather duster against sunlight (Bispira brunnea) Caribbean

GEORGETTE DOUWMA / Tube worm sprayed out {Bispira sp} Banda, Moluccas, Indonesia

Juergen Freund / Social feather dusters {Bispira brunnea} Cuba, Caribbean sea

Doug Perrine / Social feather duster worms {Bispira brunnea} and red encrusting sponge {Monanchora barbadensis} St Vincent, Caribbean

Norbert Wu / Feather Duster Worm (Bispira brunnea) worms trap plankton with feathery gills, Caribbean

Juergen Freund / Social Feather dusters feeding at night {Bispira brunnea} Cuba, Caribbean

Juergen Freund / Social feather duster. (Bispira brunnea) Caribbean

Juergen Freund / Social Feather dusters. Caribbean Sea, off Cuba

David Fleetham / Social feather duster worms (Bispira brunnea) Bahamas.

Pete Oxford / Feather Duster Worm (Bispira sp) group filter feeding in coral reef, Lesser Sunda Islands, Indonesia

Angelo Giampiccolo / Colony of Feather dusters (Bispira brunnea) with their feathers wide open to catch plankton. Belize Cayes, Caribbean.

Roberto Rinaldi / Feather duster worm / cluster duster (Bispira brunnea), Honduras.

Angelo Giampiccolo / Colony of Feather dusters (Bispira brunnea) with their feathers wide open to catch plankton, Belize Cayes, Caribbean.

Roberto Rinaldi / Colony of feather duster / cluster duster worms (Bispira brunnea), Honduras.