Hey guys, thanks for the reply.
I asked about it because as what was said here; there is not prove they went to Spain, but still appears the info about they went to film there by 3 weeks and how much money that brought to the community of Alicante in the wiki (choose one).
The xenos look good in water, smooth and sexy movements with the innate violence of the creature. I'm not sure if the water scene was meant to be in earth in the opening scene, but Prometheus is a film made in silica inside the storms that Scott loves so much; (I think he is doing better and better with it, as we saw in The Martian).
The idea of a part of the film being made since back then have been there as an inquietude and I wanted to know if out there were something supporting the filiming (or the not filming) of it.
I still have been wondering about the water, if we still think in paradise as was meant to be, a peaceful place with a inner chaos of acidic blood, the water will be a key element as a life giver and the perfect contrast in nature with the promised R rated movie.