This image shows a control site at the Mona Island reef. Control sites were selected at random to measure conditions of the reef outside the impacted area. Control sites help scientists determine the success of the restoration effort by later comparing conditions at the control site with those within the restoration areas.

Image ID: r0000758, NOAA's Restoration Center Collection
Location: Mona Island, Puerto Rico
Photo Date: Summer, 1997
Credit: NOAA Restoration Center, Erik Zobrist

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