The image composition is great! First the attention goes to the woman that to the man diving down to her and the to the guy on the pier. That creates some tension and leaves room for imagination.
The poles of the pier could do with some light refraction - The part outside of the water would be tilted to the left/towards the viewer. Also you wouldn't see the whole pier all the way to the shore but only inside a circle like you did with the skyline.