When Cities Start to Float: Rethinking Urban Living in a Rising-Sea Era
Photo: ChatGBT
When climate change transforms from distant scientific warnings into tangible realities of daily life, global cities are facing unprecedented vulnerability. Rising sea levels, coastal erosion, and the frequent occurrence of extreme weather are no longer isolated incidents but are profoundly altering the way humans live. This crisis is particularly urgent in Southeast Asia and Pacific island nations, where tens of millions of people live in extremely low-lying coastal areas, and the issue of living safety has become an increasingly serious problem. Against this backdrop, a seemingly futuristic concept – floating cities – is gradually moving from drawings to reality. From the Maldives to the Netherlands, from Busan, South Korea to Dubai, a series of pilot projects are attempting to convert “floating” into a solution to “subsidence”. This is not only an engineering experiment but also a redefinition of human lifestyle. In the 21st century, with increasing climate uncertainty, floating cities may be at the forefront of the transformation of urban resilience. In many coastal cities around the world, the traditional logic of urban development is gradually collapsing due to population and environmental pressures. Southeast Asia is at the intersection of these multiple crises. Cities like Jakarta, Manila, and Ho Chi Minh City are experiencing multiple challenges such as rising sea levels, subsidence of the ground, overloaded drainage systems, and continuous population influx. For example, Jakarta is sinking at a rate of up to 25 centimeters per year and has become one of the “fastest sinking” capitals in the world. At the same time, urban land is becoming increasingly scarce, housing prices are soaring, and the gap between the rich and the poor in cities is widening, causing the original land-based development model to fall into a predicament. According to the United Nations’ prediction, by 2050, more than 900 million people worldwide will live in areas with an altitude of less than 10 meters, and the majority of them will be located in Asia. Many of these cities in these regions may face the threat of seasonal or even permanent flooding. Faced with this reality, urban planners have to start thinking: Besides building higher up, can we also “get space from water”? “Surviving on water” is no longer just an academic topic but is gradually becoming the focus of policies and engineering practices. When land development reaches its limit, the ocean may no longer just be a risk but a new boundary for humans to redefine their living space.
