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.
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Pictured is a type commonly known as Rockweed ( Fucus vesiculosus, or Bladderwrack ) a tough northern type, adapted to the rocky shores of New England. However, it is more than happy to grow on jetties and pilings wherever it finds them and is quite common in the inlets around New Jersey. Like many other forms of algae, this one has gas bladders for flotation.
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