It's interesting how you grey scaled your original photograph of the blue misty, rocky, shores. With this, there isn't as much balance with the colors, however, The mist still offers a sense of mystery to the photograph.
I still feel like something is going to come out of the mist. And the black and white helps darken the mood and intensify the feeling that is given in the photograph.
Much like the other photograph, I do enjoy the little details of the rocks on the horizon. Though it looks that you have cropped the image just a little bit. I do like this photograph, however, I feel that I enjoyed it's previous rendition more.