I like them both but if I was buying one it would be A. I liek the fact that there is a bit more to see in the shot which makes it slightly more interesting than B. Like them both though.
for me definitely #2. In #1 the rock is more the subject of the picture while in #2 it’s function is the lead-in foreground of the landscape. That’s the reason I end up in #2 at the island while in #1 the island is just an extra element… both pictures are for me the difference between detail-in-landscape (#1) and landscape-with-foreground (#2). It’s a pity of the beautiful rocks under the surface but removal of them improves the composition for me
The first one for me – the rock detail in the water is fabulous and adds to the shot.
The balance is a little off in both, in my opinion. I’d trim about a quarter of the underwater rocks from the bottom of the first one, to have the foreground rock and the horizon roughly equidistant from their respective ends of the frame.