
Ben Kentish 10pm - 1am
When maps are being drawn is the boundary between land and sea taken at the high or low tide mark?
Edward, Finchley
**DEFINITIVE**
Name: Rob, Treorchy
Qualification: Metal detectorist who visits a lot of beaches
Answer: For the purpose of determining who owns what is discovered on beaches they use the average mid-point, so arguably the same principle could be applied to maps.