This study presents the species composition of living coccolithophore communities in the NE Aegean Sea. 72 water samples from 4 different sampling stations were investigated. Stations were located along a north-south transect in the area receiving the inflowing surface Black Sea Water (BSW) over the deeper Levantine Water (LW) layer. 6 different sample depths were sampled. Coccolithophores in the area were diverse and a total of 95 species over 3 sampling periods were recognized using Scanning Electron Microscope (SEM) techniques.