Here's the info for Ghost Beach.
Ok, so we knew about the trees and beach thing, and were hopeful that they would be visible when we went. They were!! It's very odd to see these tree stumps all over the beach, and to know that it's actually the tips of giant trees that we are seeing, not stumps, like bottom of the tree stumps. To also know they were only exposed in 1996-1997 during a stormy winter season...pretty cool. Before that, nobody knew there was a sunken forest under this beach.
Be warned though, you have to cross a pretty fast moving creek/river to have access to the part of the beach where the trees are. We debated for a while, and then just went for it and hoped it wasn't too deep where the water got darker.