The Central European Diatom Meeting (CE-DiatoM) is bringing together young and experienced scientists as well as amateurs working with diatoms. CE-DiatoM is a regional platform of annual meetings held at different places additionally to the bi-annual meetings of the International Diatom Society. CE-DiatoM started 2007 and was preceded by the meetings of German Speaking Diatomists (DDT) which started 20 years earlier.