It was a speculation fiction story, available to read online on a scifi magazine's website. It took place on a planet where the local environmental avatars were all ocean-based because settlers from another planet had brought their own avatars which replaced the original land-based ones, and the story was about an attempt to interact with the new avatars and stop them from taking over everything. The title was a poetic description of shallow water or tidal zones, I think.
Does that ring a bell for anybody?