We drove to Hook of Holland after breakfast, and headed fro the beach. I had a swim in the North Sea but Sraddhabha spotted a jellyfish and demurred. I didn't see any, but she was probably right as a young girl came out of the water crying, having been stung.
At the ferry terminal we had a very quick boarding experience and then a smooth crossing. We drove straight home from Harwich, arriving back a bit after midnight.