Counts of bivalves and polychaetes per family for several replicates sampled at 4 stations in the Voordelta between April 1988 and March 1989 and average density and biomass of macrobenthos species for several clustered stations sampled in the Grevelingen and Oosterschelde area between July and August 1988. The data were digitized by VLIZ from the original report: Craeymeersch, J.A.; Buijs, J.; Brand, R.; Hannewijk, A.; Sistermans, W.C.H.; Stikvoort, E. (1990). Benthosonderzoek in relatie tot abiotische dynamiek het macrobenthos van de Voordelta: interimrapportage juli 1989. DIHO rapporten en verslagen, 1990(4). Dienst Hydrologisch Onderzoek (DIHO): Yerseke. 72 pp.