All manner of concrete, steel, and stone rubble from dredging, demolition projects, and other construction is used as artificial reef materials. This material is generally available at very low cost or free from construction companies who are more than happy to get rid of it. Transportation costs determine where this material is used by the Reef Program.
Notes: These large and majestic birds may be seen wading in the shallows, hunting fish and frogs. They are not as uncommon as you might think but watch from a distance as they do not like to be approached.