First image, I like the stormy mood and the monochromatic color palette (saturation may be pushed a bit too far though). I also think this is an example where breaking the rules and placing the horizon center-frame works. The water is a bit choppy though, I think the image might have been better if you could have used a longer exposure to smooth out the waves some.
Second image, I like the way the ocean seems to be reclaiming the wreckage. I think the tide level is important here; higher or lower and the image wouldn't have worked as well for me. The piece of wreckage/rock on the right edge of the frame is a little distracting; it's usually better to keep things like this away from the edge, or out of the image altogether (sometimes there just isn't a 'clean' cutoff point for the image though so we have to do the best we can). Post-processing wise, the sky seems oversaturated to me, although I do like the greens and blues in the water.
The last image just doesn't do anything for me. The detail in the birds head/eye is good, but the image is just way too cluttered, and selective color doesn't solve the problem.