Hamzah Anwar Abdo Ali Noman: In 2050, the ocean water level and soil slippage are expected to rise by 25.4 cm each year, and climate scientists predict that by the end of the twenty-first century, water will rise from about 65 cm to 1 meter, and by the middle of the next century many cities around the world may drown and many islands disappear. So the important question is: where will all these people go? The need for sustainable and floating residential cities projects lies in avoiding the risks that threaten many cities to drown in the future as a result of rising sea levels due to global warming and melting ice, through the implementation of various projects for sustainable and floating cities at feasible and reasonable economic costs so that they are safe and livable away from the risks of potential drowning, in addition to providing water, food and energy in sustainable and renewable ways that enhance livability for long periods.