Bristle Worms and their Larvae: A nicely illustrated article about polychaete worms from Micscape Magazine.Current research on Onuphid beachworms from Australia: Details of the current research on beachworms (Onupidae) being conducted at the University of Queensland (Department of Zoology) by Matthew O'Brien for his PhD.Guide to Singapore Polychaetes: Introduction to Polychaetes, list of families, an interactive system for Polychaete identification, glossary, and references.Spirobranchus giganteus - Christmas Tree Worm: Photo from Florida Keys National Marine Sanctuary.Spirobranchus giganteus - Christmas Tree Worm: Photo and description.