Yes, I would be tempted to crop to just below the dark area just left of center near the top.
After doing that, if you didn't like the form factor, you could get a way with cropping a little off both sides, but I probably wouldn't do that.
I like the dramatic wave action, and the fact that the "lunge" is a little off center strengthens the image. Nice one!
Is this still Iceland, or are you now exploring parts of the British Isles that look most like Iceland?
-Eric