The Hellenic Centre of Marine Research collected samples in the context of a Number of National and EU-funded projects. The datasets covers qualitative temporal data from Polychaete worms in the Aegean and Ionian Sea

This data collected in the framework of a PhD thesis were collected between 1934 and 1936. Scientists from the Hellenic Centre of Marine Research computed the dataset afterwards (Vatova, A. 1949).

This dataset was compiled in order to monitor long-term responses of the macrobenthos community to the environmental quality changes in the Northern Adriatic Sea