Dubai plans to build the world's largest artificial reef Dubai Reefs.

It will cover 200 square kilometers and be home to over 1 billion corals and 100 million mangrove trees. Dubai Reefs is to help restore the marine and coastal environment. It will house facilities for marine research as well as ecotourism. The floating houses will run on completely renewable energy sources. Also on the reefs it will be possible to engage in regenerative marine farming - this is an environmentally friendly technology for food production.