The sky and the crashing wave combine, creating a flowing image that works perfectly, you got a great angle there too! The people moving create the emotion of the image! On the whole its a really good image and can't think of any critisim's!
Beautiful capture, and good exposure, i don't think it couldn't be done better. Its like threres a bad storm brewing in the far distance, Just like Trever1t said "Powerful Image"