In 2016, CWSS initiated an annual jour fixe of the Secretariats of the three German natural World Heritage sites aimed at exchanging information, fostering synergies and increasing their visibility among German World Heritage sites.
On 23 March 2018, the three national delegations of Denmark, Germany and the Netherlands as well as advisors from the Wadden Sea Forum and the NGOs Waddenvereniging and WWF met for the 23rd meeting of the Wadden Sea Board (WSB 23). The meeting was held at the Wadden Sea World Heritage Visitor Center in Wilhelmshaven, Germany.
The Interreg NSR project 'Building with Nature' submitted a short video for the video competition of the Interreg North Sea Region Programme. From ten entries this video was chosen as the winner.
On 18 May, the Wadden Sea ministers adopted the Leeuwarden Declaration at the 13th Trilateral Wadden Sea Conference.
On 20 April 2018, the 24th meeting of the Wadden Sea Board was held (WSB 24).