I used Acros with red filter on the first two. On the second shot, however, I bumped the contrast up even higher in post and probably took it a little too far. The third was shot using Astia and the converted to B&W in post.
I liked the juxtaposition, or whatever the artsy term of the moment is, for the leading lines in this photo... yeah, that's what I contemplatively was thinking as I carefully composed the image.
In reality it was more 1) take walk along beach with camera 2) see cool looking clouds 3) point camera at clouds and hit shutter