A phylum of segmented worms characterized by bristle-like appendages called setae or parapodia used for movement and anchorage.
From Greek 'chaete' (bristle) and 'poda' (feet), the root term for this entire phylum of bristle-footed worms that has been studied for centuries.
Chaetopods have been around for over 500 million years and evolved in the ocean before some of their descendants moved to land—today they include earthworms, leeches, and some of the ocean's most colorful creatures.
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