Is a ragworm an earthworm?
Although both belong to the Phylum Annelida a ragworm is not an earthworm. The ragworm (genus Nereis) belongs to the annelid class Polychaeta (many bristles) a large group of 5,500 species of marine worms with segmented appendages and bristles. The earthworm belongs to the annelid class Oligochaeta (few bristles), species of this class are predominantly freshwater and terrestrial with no appendages.