I'm getting involved in projects to create artificial reefs here off Santa Catalina Island, CA. Years ago I was not in favor of artificial reefing due to environmental concerns, but with changes in the procedures to prep such vessels, I now see a number of benefits and far fewer concerns.
I performed a search on the subject here and did not find threads that specifically addressed the environmental pros and cons of reefing in general. The threads I did see were project-specific.
I would greatly appreciate it if Dive Matrix members would consider this thread an open forum to discuss both the pros and cons from their perspective. It could be very helpful in this effort. TIA.