Saturday 7 and Sunday 8 August 2021 Will you also roll up your sleeves this summer for a clean and healthy North Sea? The North Sea Foundation has been cleaning up as much waste as possible from the Dutch North Sea beaches with thousands of volunteers for seven summers. The Boskalis Beach Cleanup Tour this year focuses on pollution caused by cigarette filters. Participation is free. Times: when registering you choose a time slot. Report to the Noordzeekraam stall within this time slot, after which you can get started. The Noordzeekraam stall is open from 10 am to 4 pm.