In the 1970s, old tires were used to create artificial reefs. However, this method failed as the tires did not foster marine life and the binding materials deteriorated. This led to loose tires being scattered across the ocean floor, damaging natural reefs and ecosystems. Cleanup efforts have been ongoing, with divers removing hundreds of thousands of tires across the U.S. and beyond. Scuba divers are essential to these cleanup missions, helping restore marine habitats impacted by the failed tire reefs.