I was tempted to say 'under the boardwalk' because of the song, but we just don't call them that.
Lots of opportunities to photograph these lovely old jetties, all over the SA coastline.
A different pov. Most often I see this view looking toward the ocean with lots of nice waves. Boardwalks tend to run parallel to the ocean so this would be a pier in my world. (remember I live in the foothills of the mountains and get to the beach about once every 5 - 10 years). And I am humming along.
Nice light & textures!
Ian