At sunset just before heading home to the Seattle area, we stopped by Copalis Rock. This is located four miles south of Pacific Beach by road, and another three miles south driving down the beach. There's a stream one mile north of the rock, but today it was low enough to drive across.
We arrived at the rock both at sunset and at an extreme low tide. On my last visit, the water kept me a few hundred feet away. This evening we could walk right up and touch the rock. The first thing you notice that close is that the rock is really a collection of about four rocks - perhaps more if you could see around the other side. There are also a few sizeable rocks further out on the ocean, which are perhaps mostly submerged by a higher tide.
The lower ten feet of Copalis Rock - the part that is normally submerged - is covered in big purple and orange starfish, tightly closed anenomes, and mussel shells. This coast doesn't have any tidal pools that I'm aware of, so the low tide is a special opportunity to see these animals.
I'll post more pictures here: