The Polychete Worm is a marine worm that belongs to the class Polychaeta. There are many synonymous terms used to refer to this type of worm, including bristle worm, segmented worm, and annelid worm. These names are derived from the worm's physical features, which include bristle-like appendages and a segmented body. Other synonyms for Polychete Worm include polycheate, polychaet, and polychate worm. Regardless of the term used, these creatures play an important role in marine ecosystems, serving as prey for larger animals and contributing to nutrient cycling in the sea.