took these in south Florida yesterday. Setup is D300 + 10.5 fisheye + custom water housing from waterhousings.com.... Really great conditions for these
That is some wave action. #3 is my favorite, though I think in the first 3, you are losing some highlights that should be brought back in. #4 is cool, very different.
# 3 & 4 are my faves... 3 especially should be printed and framed. i might darken it just a bit and punch up the saturation a notch or two, but otherwise, outstanding!