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Bristle worm. Saltwater. Feather Duster Worms. This feather duster has a single, circular crown of radioles. The coloring of the crown is usually in shades of gray to brown, can be uniform, but also variegated or banded. The pattern is formed by spots on the stems of the radioles. Lees meer

Bristle worm. Saltwater. Tube Worms. This feather worm has a double fold of radioles that form a U-shaped crown. The opening of the tube has a simple lid (operculum) that consists of a series of discs. The tubes are hard, calcareous. Lees meer