First thing I thought of was this is not a unique picture, I have seen a lot of pictures like this with rainbows but I must say it is nice. This picture is really dark though and feel that it could use light. I really notice how the rainbow reflects onto the top of the rocks which I don’t know is a good thing or a bad thing but I’m not really like it cause it makes the rainbow look brighter then what it is. I like how the end of the rainbow is brighter then the rest of it and wish that the whole rainbow were that bright.
One thing I think that would really help this picture is the de-centered horizon line, if it was either centered or blended better with the ocean, it would be 100 times better. Another thing that would be better, if possible, is have the photographer back up and either get more the cliff or ocean and bring the main focus which is the rainbow to either more of right picture or left picture.
All in all this is a good picture that to me needs some improvement to become a great unique picture.
With some of the improvments.