That's a really lovely photo - your sense of composition is great! But, it looks too Photoshopped - no one who has spent much time at the ocean (that's me) would believe the water color. Also, at the top right, the shadows in the rocks are blocked - perhaps unavoidable, but that spit of land is the heaviest element in the photo.
Where is this? It looks like a photographer's heaven!
Thanks Peter. I did a Vibrance adjustment in LR2.3, but this was about what I saw in my "photographer's eye". The light was a bit flat that day. I agree, the upper right needs some more work. I'll see if I can open up the shadows a bit.
As for the location, it's on the southeast side of Oahu, between Hanauma Bay and Halona Blowhole for anyone who's been to Hawai'i. There really is a little bit of everything in Hawai'i, even snow (on the Big Island), and I'm not complaining.