The edge of the sea is as real as anywhere else, if that counts as a thought on the subject. Imagine that 'Being in the moment' is plugging in, not just to your own moment, but to all the moments connected with it. As I write this, the waves are still there, and that beautiful sky, loaded up with rain. Another day and different weather, but it's good to think that the world can do that as well as put me in front of this screen. I'm touching that place now, and the people out early with their dogs.
We used to talk, do you remember, and there was often a time when we'd agree that words only went so far? That was another lifetime, but it still holds true. The moment in meditation where you spread your awareness over the world and nature? Description is not enough sometimes. Close your eyes or travel: be there.