IMG_0412_3_4Enhancer
I think you went a little too far with the HDR effects on this one, there's practically no visible shadows anywhere on the photo even though you have a bright sky with visible sunbeams. It just seems a little too obviously processed.
IMG_0448
Same as above, except it's more obvious. It looks like a movie set where someone's shining a bunch of spotlights on the cliff, the lighting doesn't look right. The cliffs are way brighter than the sky which is confusing to me. Again, think subtlety.
IMG_0493
This one's probably the most "real" looking of the bunch. Lighting's good, you have nice shadows & contrast, good work.
IMG_0380_1_2 HDR
Same as the first couple, except on this one I can work my Photoshop magic and get back to where I think it should be.
Original
Edit
Note the contrast in the water, particularly near the rock on the right of the picture. There's not enough contrast to my eyes in the original which makes the waves & water look "flat" and washed out. I also like the deeper bluer skies with more contrast in the clouds, though unfortunately I pushed the reds a little too far so some clouds have a bit of a reddish tinge and the sand is also a bit too red.