This presentation gives an overview of the results of the EMODnet Sea-basin Checkpoints (Arctic, Atlantic, Baltic, Black Sea, MedSea & North Sea) related to chemistry. The presentation was given by Atanas Palazov, EMODnet Black Sea Checkpoint and Head of the Bulgarian National Oceanographic Data Centre and former Director of IO-BAS, at the EMODnet Sea-Basin Checkpoints Stakeholder Conference held on the 14-15 February 2017 in Brussels.