Changing coastline of Britain - NOT amateur radio

This map was on social media recently. It shows how the British coastline probably looked over the last few thousand years. In a human lifetime things change too slowly to notice.

Coast walk - NOT amateur radio

So, I was going to do some radio operating from a bench on the coastal path but instead we went for a walk along the coastal path in the glorious sunshine. In all I walked about 3.5km, which in my current state is quite good. Years ago this would have been trivial.  This is Thurlestone, Devon looking towards Burgh Island.