According to the less alarming forecasts of the GIEC (Intergovernmental Group on the Evolution of the Climate), the ocean level should rise from 20 to 90 cm during the 21st Century with a status quo by 50 cm . As a solution to this problem, architect Vincent Callebaut has come up with an ecotectural marvel that could serve as a future retreat for 50,000 inhabitants seeking refuge from rising waters due to global warming. The auto-sufficient, floating city/structure is covered in green walls and roofs, the top portion covered in grasses with the inner portion featuring a palm oasis, and the under portion serving as a bed for natural sea planktons and oceanic plants.
Vincent Callebaut called this project “Lilypad“
Read in full - 'Future Architecture: Floating Ecopolis for Climate Refugees'