Designing, planning, constructing, managing, operating and maintaining floating neighborhoods, villages and cities for people to live and/or work sustainably on bodies of water such as the ocean, the foregoing including buildings, platforms, residential housing, commercial buildings, production facilities, harbors, green spaces, social spaces, recreational spaces, commercial spaces, agricultural spaces for growing plants, means for producing and distributing energy, means for producing and distributing potable water, logistical service hubs and transport hubs, and means for processing waste