https://www.mypalmbeachpost.com/news/artificial-reef-project-aims-increase-sea-life-lake-worth-lagoon/Bu8USKRCZAlh4a1GJJoJbJ/
If a city dumps demolition debris into the ocean it gets away with it because it calls the debris an artificial reef.
Remember that artifice of reality if you are ever ticketed for heaving an empty handle of vodka off a boat:
No, officer, I was not littering. I was providing the Sea Horses with a spy glass so they could see danger approaching.