Wild Wonders of Europe / Lundgren / Bristleworm {Nereididae} swimming, Saltstraumen, Bod, Norway, October 2008

Juergen Freund / Giant fanworm / feather duster {Spirobranchus spallanzani} on coral reef, Mediterranean

Pascal Kobeh / Hard coral (Porites lutea) with Christmas-tree worms (Spirobranchus giganteus), New Caledonia, Pacific Ocean.

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

Jordi Chias / Bristle worm (Polychaeta sp), Antarctic Peninsula, Antarctica.

David Fleetham / Blue spiral fan (used for feeding and breathing) of Christmas tree worm (Spirobranchus giganteus) visible on reef. Maui, Hawaii.

Tony Wu / Bobbit worm (Eunice aphroditois) protruding from its burrow in the muck of the Lembeh Strait. Bobbit worms are ambush predators, lunging out to grasp prey with their pincers.

Franco Banfi / Detail of Bearded fireworm (Hermodice carunculata) Vis Island, Croatia, Adriatic Sea, Mediterranean

Franco Banfi / Detail of Bearded fireworm (Hermodice carunculata) Vis Island, Croatia, Adriatic Sea, Mediterranean

Franco Banfi / Slope close to wreck of the cargo boat 'Vassilios T' with Bearded fireworm (Hermodice carunculata) with Sea star (Hacelia attenuata) Vis Island, Croatia, Adriatic Sea, Mediterranean

Franco Banfi / Tube worm (Sabella spallanzani) Stupiste out dive site, Vis Island, Croatia, Adriatic Sea, Mediterranean

Franco Banfi / Spirograph worm (Sabella spallanzani) Ischia Island, Italy, Tyrrhenian Sea, Mediterranean