Low tide (tidal variations are 6-7 meters in this area) has exposed large swaths of seaweed covered granite. Because of the large variations of tidal sea level, the impact of the waves on the rocky shoreline is always different: none of the rhythmic sameness of breakers rolling in on flat sandy beaches, but instead a constantly changing crash-and-splash of surf against rocks.
(Just south of Quoddy Head, the far most northeast point of the U.S.)
(And, in retrospect, that splash is bigger than I originally thought: probably 8-10 meters. Also, way out in the seaward channel, a seal.)