Sunday 7 and Monday 8 August 2022 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 eight summers. Participation is free! Times: August 7 at 10 am gathering at Paal 17 beach pavilion. August 8, 10 am gathering at Paal 9 pavilion. Closing time is around 3.30 pm. View the full program on the event website.