A rescuer takes part in rescue operation and chemicals decontamination exercise at the Seaplane harbour in Tallinn, capital of Estonia, on June 5, 2018. The exercise is one of the events of the 9th annual forum of the EU Strategy for the Baltic Sea Region (EUSBSR) taking place here from 4 to 5 June, which aims to tackle on development and marine environment protection of the Baltic Sea Region.(Xinhua/Guo Chunju)