They are called fringing reefs. They grow directly from shore and form borders along the shoreline.
When a fringing reef continues to grow upward from a volcanic island that has sunk entirely below the sea level, an atoll is formed. Atolls are usually circular or oval in shape, with an open lagoon in the center.
The fringing reef is the most common type of coral reef. They however tend to be very sensitive to human induced pollution in the water and are easily destroyed by such.
<span>Macon, Augusta, and Columbus are located in the (C) Coastal Plain Region in Georgia, which includes the lower half of the state.
The Blue Ridge Mountains Region includes the far northeast counties of Georgia. The Appalachian Plateau includes the far northwest counties of Georgia. The Piedmont Region includes the remaining counties in the upper half of Georgia.</span>
