Hi Kathy,
I like the low angle. Toning down together with the slightly larger size of the crab in the repost certainly helps bring the focus on the crab.
However, I would also agree with Steve that the bright highlights gives the hint of the waves. Since you had lot of shutter speed to play around, a narrow aperture (by two more stops) might have given more depth of field and more feel of the waves, if that is what you wanted to portray.