Yesterday I ambled sedately along the sand, occasionally galvanised by the inrush of the seventh wave:
An epitome of the past: fragments of fossilized wood, embedded in the dense grey-green matrix, which then eroded out so that a boulder of it was overwhelmed by sand, which was compressed to rock, eroded out again into a lump, displaying the deposition patterns of the sand (windblown? waterborne?), and now on the loose ready to be enfolded in yet another epoch.
Remember you are British:
The landslip lays a rainbow on the beach:
Plenty of samples for potters. But I had forgotten the carrier bags.