This is a beach up the coast from San Francisco about 100 miles. When there is a very low tide these rocks are exposed. The bigger ones are maybe 3-4 ft across. Shot a few days ago in boring, foggy light, so I converted to B/W.
Canon 5D3, 24-70 f/2.8 at 28. Singh-Ray VariND, ISO 100, f/22, 20 sec.