https://reefinnovations.com/projects/us-south-east/florida/dade-county-reef-balls/biscayne-bay
‘Reef balls’ made to shore up sea walls in north Biscayne Bay
Read more here: http://www.miamiherald.com/2013/11/24/3774550/reef-balls-made-to-shore-up-sea.html#storylink=cpy
