> In Florida, where I grew up, the state would sink old barges, tires, cement tubes left over from construction projects, etc. to make artificial reefs. On the

> In Florida, where I grew up, the state would sink old barges, tires, cement tubes left over from construction projects, etc. to make artificial reefs. On the other hand, some of those projects were a net negative for the environment, e.g. https://en.wikipedia.org/wiki/Osborne_Reef https://en.wikipedia.org/wiki/Osborne_Reef