My comments... and please remember that I am not an expert of anything(actually not even a beginner!)
The dolphin is brought too close to the forefront by the water droplets... this gives an unrealistic appearance to the shot(boy, did he ever jump high!) I suggest having the droplets splashing back into the water or not actually completely rising out of the water so as to locate the dolphin's jumping point. Right now, it appears he could have jumped from that furthest rock. You are working with a very nice shot and an interesting idea. :o)
I agree with both of the above. It does look very nice but I tend to agree about the water. I'd expect the water surface to be disturbed where the dolphin exited.
I'm not sure about the angle and height of the dolphin, but I'm not an expert - just seems very high with no sign of turning to re-enter the water. It rather worries me, actually, so near all those rocks. I hope she or he knows what she's doing leaping out near the shore like that. A dolphin must need a fair depth of water when re-entering, surely? (Where are all the dolphin experts? I have no idea what I'm saying.)
Anyway, it still looks good. Lovely colours and I'm very fond of dolphins. Well, I don't actually know any personally, but I'm at least fond of the _idea_ of dolphins.
I got this in the voting booth and it got high vote from me. I like the way you composed this creation as well as the colors you used. The dolphin looks too high in the water to be realistic and the water under the dolphin looks too calm to have a dolphin jumping out of it1 Otherwise, I really enjoyed viewing this and I think your creativity is showing :). thanks for sharing this with me !