I really like the first one - the composition (due to the water from the ocean) is much better than in the second one. I love the curve of the water which interacts with the arch.
The people on top of the rock don't bother me, they actually tell a good part of the story, showing how massive that rock is.
I also love the simple tonality of it, maybe even a black & white version would work.
Thanks for your comment, I prefer the reflection in the water. But, I am happy that the first one has something. About the two persons in the rock, I agree. But in the sand there was many people, and it was difficult get the beach free of tourists.