There's a major dinghy sailing competition in North Berwick* this week, with sailors from all over the UK. Most of them are adults, and many of them usually sail on lakes.
One bloke (an adult) wandered up to my dad, who is performing cat-herding duties on the beach. He looked across the beach - where the tide was half way out, and said, "Is this place tidal?"
My father replied, "Oh, only twice a day."
This bloke had driven himself and his boat up from England. Apparently he managed to do so without looking at a map.
*North Berwick is a seaside town, which - if you look at a map - is very obviously next to the North Sea.
