Stellar with the way they lead our eye. I might have cropped a bit more from the top and given it an extended pano look. The solid gray seems more than you need. But I like the proportion, so that's clearly the trade-off.
I just took your photo and added just the tiniest bit of light between the barnacles. It was not much, since you would probably wonder where the light is coming from, but that really helped draw the eye.