general/artificial-reefs
Surf Wiki
Gibraltar Artificial Reef (1)
Artificial reef (1)
Multi-purpose reef (1)
Sinking ships for wreck diving sites (1)
Gibraltar Artificial Reef
Artificial reef project off Gibraltar
Artificial reef
Human-made underwater structure that functions as a reef
Multi-purpose reef
Underwater structure intended to produce surfable waves from prevailing swell
Sinking ships for wreck diving sites
Scuttling old ships to produce artificial reefs