This article presents an investigation of three sequences of marine and associated deposits in the south-west Baltic area. Pollen, foraminiferal and ostracod analyses indicate sea-level change. Chronology is based on the Bispingen lake deposits in Germany. Freshwater lakes occurred first in the basin followed by marine inundation. Linking the German sequences to those in the Baltic shows that the Eemian transgression passed through Germany and the Kattegat by connections to the North Sea.