Spiochaetopterus typicus (M. Sars, 1856)
Up to 130 mm for over 150 segments.
In alcohol yellowish to white.
From 2 to 4000 m deep. Tube obliquely in muddy sediments. Species tolerant to excess organic matter enrichment. These species may occur under normal conditions, but their populations are stimulated by organic enrichment (slight unbalance situations).
Surface deposit feeder.
Pelagic larvae with a very long planktonic life lasting several months.