The ASCOBANS Jastarnia Group has successfully concluded its 17th annual meeting, which took place virtually from 25 to 27 May 2021. As the Steering Group for the ASCOBANS Recovery Plan for Baltic Harbour Porpoises (Jastarnia Plan) and the ASCOBANS Conservation Plan for the Harbour Porpoise Population in the Western Baltic, the Belt Sea and the Kattegat (WBBK Plan), the Jastarnia Group reviewed progress on the implementation of the two Plans by discussing key activities of each Range State present and by presenting updates from across the Baltic and Belt Seas.