Not far from Key Biscayne, Florida, is The world's largest man-made reef of origin, called Neptune Memorial (Neptune Memorial Reef). The depth of the reef is about 14 meters.
This kind of cemetery appeared not so long ago. Just over five years ago. The initiators of this reef was a group of divers, who offered to arrange a real underwater graveyard that will not harm the environment is, at the same time, being the object of the program of Florida, relating to the protection of the coast of the peninsula. One burial would cost to anyone wishing to almost one thousand dollars.