In order to make it the largest artificial coral reef in the world, the huge historic passenger ship SS United States was deliberately sunk in the Gulf of Mexico off the coast of the US state of Florida.
According to American media, the ship, which at the time was the fastest ocean-going passenger ship, was lowered below the surface of the water as part of a $13.5 million project that aims to attract divers and fishing enthusiasts while creating a habitat that provides a suitable environment for marine life.