The 9th Meeting of the Steering Group for the ASCOBANS Conservation Plan for Harbour Porpoises in the North Sea (the North Sea Group) took place online from 20th to 21st January 2021. Parties reported on implementation of the Actions listed in the Conservation Plan, such as bycatch observation programmes, review of current pingers / development of alternative pingers and gear modifications, review of the stock structure of harbour porpoises, and collection of incidental porpoise catch data through stranding networks.