Coverage of Delaware is restricted to just those sites that are in the ocean. Siting reefs has been tricky for Delaware, as they must be kept clear of the shipping lanes. This doesn't leave a lot of places that are both located in usefully deep water and a convenient distance from shore.
Delaware has eight permitted reefs in the Delaware Bay, and another way offshore that is undeveloped and will likely stay that way.
Site #8 has a 70' tugboat "Golden Eagle". Site #6 has a 120' barge. Site #1 has a 40' pilot boat. Other than that, the Delaware Bay reefs are all concrete rubble.