These are unique pieces that continue to unfold with repeated viewing. The mind holds together multiple images that may change their relationships over time or they may have been incompletely observed and get parceled with other images to create memories.
Lots of tricks to the eyes, like breaking waves that are actually a mountain range. Shadow figures, indirect references, blurred margins or margins that share in some subconscious way with the photo add to the construction of memory.
Like memories that can change over time with maturation and aging effects, these combines provide clues to memory as they filter through the artist or the viewer.