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These are animals the Phylum Annelida, Class Polychaeta, Family Amphinomidae. Commonly they are called: Bristleworm, Fireworms; Large Scavenger Fireworms.Eurythoe complanata. Left. A Eurythoe foraging on some Caribbean sand.he scales on this worm cover the entire upper surface. Scale worms are small polychaete annelids or bristle worms that are scavengers or predators in natural marine ecosystems. They seldom exceed 2.5 cm (1 inch) long, but there are a few bigger ones.
Introduction to the Annelida. Segmented worms make up the Phylum Annelida. The phylum includes earthworms and their relatives, leeches, and a large number of mostly marine worms known as polychaetes. Various species of polychaete are known as lugworms, clam worms, bristleworms, fire worms, sea mice, and EWWW! I stepped on that THING!. Annelids can be told by their segmented bodies. Polychaetes (meaning many bristles) have, predictably, many bristles on the body, while earthworms and leeches have fewer bristles. There are about 9000 species of annelid known today. Click on the buttons below to learn more about the Annelida.