The floating communities in the Netherlands, which emerged in the past decade, have served as proof of concept for larger-scale projects now being spearheaded by Dutch engineers. These are not just in European countries such as Britain, France and Norway, but also French Polynesia and the Maldives, where sea level rise in the Indian Ocean nation now poses an existential threat. There is even a proposal for floating islands in the Baltic Sea on which small cities would be built.