Poecilochaetus serpens was in both periods found across the Flemish, Zeeland and Hinder Banks as well as across the western coastal zone. However, the relative frequency of occurrence in both periods was low. Poecilochaetus serpens reached densities up to 300 ind./m2 (1994-2001 period).
Degraer, S.; Wittoeck, J.; Appeltans, W.; Cooreman, K.; Deprez, T.; Hillewaert, H.; Hostens, K.; Mees, J.; Vanden Berghe, E.; Vincx, M. (2006). The macrobenthos atlas of the Belgian part of the North Sea. Belgian Science Policy. D/2005/1191/3. ISBN 90-810081-6-1. 164 pp. (look up in IMIS)