Patch Reefs

The grid was placed on the edge of a small patch reef (upper right). Clearly visible within the grid is a large (~ 0.5 m in diameter) boulder coral (that is undergoing massive bleaching. Also within the gird are some soft coral that are common around the base of the patch reefs. The second picture (lower right) is of the patch reef beside the grid. Patch reefs are much like the reef crest but they are smaller isolated features. 
Patch reefs are found randomly toward the island side of the reef crest, however the frequency increases as you approach the reef crest.