Sunk in December of 2000 on the Axel Carlson Artificial Reef off Bayhead, New Jersey, USA. The structures resemble small igloos made of concrete and have been used worldwide to create ocean reef habitat. The 4-foot by 3-foot reef habitats weigh about 1,600 pounds each and have numerous access holes for fish and other marine life. When deployed at sea, the Reef Balls are placed in groups of 10-20 structures to create one good fishing spot or individually dispersed over the sea floor to provide isolated refuges for fish and lobsters. The 700 habitats were divided equally among two reef sites, Barnegat Light, located four miles east of Barnegat Inlet and Garden State North, located eight miles south of Barnegat Inlet.