In my other Blog, the posting "Beachcomber" features a day doing just that and associated artistic activity. This drawing was done not on Morecambe Bay but in the eastern Med last year. I was sitting on the beach doing the usual sea studies when I noticed this footprint (not mine) beside a stone also the track of the mountain bike I had borrowed.
Apart from its qualities as a drawing, the image is quite evocative. Memories.