Nice Pair.... However I'm with the others on the vignetting im afraid. I guess vignetting is ok(ish) in the case that your point of intrest is in the centre....
There are elements i like in both but obviously this is just my personal take on them
No 1 Quite like the shot... for me the burst of spray is the point of interest / focal point. I think the vignetting and the shallow depth of field has nailed the foreground interest as the immediate forground is OOF. I guess the point of focus must have been either the rocks or just in front. As mentioned above the horizon is a tad off. I really like the rays from the sun and the sun hitting the underside of the clouds, the exposure is controlled, and there's some nice gradients and colour in the sky. Like the light hitting the sea and the little highlights its created across the pebbles and the few little highlights in the spray. Not convinced about the dead central composition? Also (and i know im going to get shouted down here) I'd have that Bl00dy Sh1te hawk out of it
(its OK just an inherent dislike ex Navy people have for seagulls, Notheing to do with photography
).
No2 Much more subtle shot, softer light, lovely rays from the sun brushing the clouds, and softly lighing the water. There is some nice pricks of like hitting the rocks in places and like the foaming waves. Wonky horizon, BTW this could be your tripod sinking in the sand / pebbles often happens on the beach. Ditto above with the seagulls, but again this is a personal thing.
Please dont think this is negative, its not intended to be, after all Photography is very subjective!
All the best
Steve