There were mounds of these at intervals today.  In addition to being visually interesting, they provide another, auditory treat: when the water recedes over them, there is a clatter of rattle-y noise as they bang into each other.   So you hear the rush of the incoming wave, the pause, and then the staccato rapping of the stones.  Pause.  Next wave.  Repeat…

I took this just after the sun had set — barely.  The horizontal layers of rock, sea, and sky follow the Art 101 rules of composition.  Nature is good at that!