Six different anchoring solutions were used, depending on the specific bottom type in the area to insure that the reef balls will be stable during hurricanes events. Incidentally, the engineers were impressed that they did not need an underlayment / filter cloth or other support to keep the Reef Balls from sinking into the sand....the Reef Balls allowed the seagrass to survive and so the root system of the seagrass acts as a biological underlayment / filter cloth.
