• Bristle Worms and their Larvae - Article by Wim van Egmond on the life cycle and development of these marine worms, nicely illustrated.
• Chesapeake and Coastal Bay Life: Polychaetes - Provides information on bristleworms, their habitat, reproduction, feeding, predators and description.
• The Distribution, Abundance and Population Dynamics of Beachworms (Onuphidae) in Queensland/N.S.W - Details of the current research on beachworms Onupidae being conducted at the University of Queensland by Matthew O'Brien for his PhD.
• Eudistylia vancouveri - Exercise from Invertebrate Anatomy OnLine covering the systematics, external and internal anatomy of this fan worm.
• Glycera dibranchiata - Exercise from Invertebrate Anatomy OnLine covering the systematics, behavior, external and internal anatomy of this bloodworm.
• Guide to Singapore Polychaetes - Introduction to Polychaetes, list of families, an interactive system for Polychaete identification, glossary, and references.
• Hydroides elegans - Taxonomy, photographs and description of this fouling serpulid worm, its habitat and distribution, life history, physical tolerances, community ecology and invasion information.
• Myzostoma - Exercise from Invertebrate Anatomy OnLine covering the systematics and external anatomy of this crinoid commensal.
• Nereis virens - Exercise from Invertebrate Anatomy OnLine covering the systematics, external and internal anatomy of this ragworm.
• Polychaete Identification Keys - Taxonomic information provided by the Natural History Museum.
• Polychaete Larva - Photograph of a Magelonid larva.
• Polychaete Larva - Photographs and information on several species, provided by the Guide to the Marine Zooplankton of South Eastern Australia.
• Polychaetes.info - Provides a database of species descriptions and images. Data-sharing site for anybody who is working on polychaete identification, taxonomy and systematics.
• Sandworm and Bloodworm - A study done by the US Army Corps of Engineers on economically significant Polychaete worms. Includes life histories, habitat and toxicology. Published in 1988. [PDF]
• Serpula vermicularis - Exercise from Invertebrate Anatomy OnLine covering the systematics, behavior and external anatomy of this feather duster worm.
• Spirobranchus giganteus: Christmas Tree Worm - Photograph taken in the Caribbean.
• Trochophore Larva - Photograph of a Mitraria larva.

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