The Great Barricade Reef (大々的立てこもる岩礁 Gureeto Barikeedo Anshou) is a large expanse of Full Coral, and the only location known for getting it. It lays between two islands with only small sections being low enough to pass through. Though, no one truly knows how long it is, the estimate is somewhere between one to two hundred miles long and is known for being home to much of the coral-covered wreckage.