The Lilypad floating city concept

Although it’s just a concept, an idea, the Lilypad elicits a ‘wow’ when you see the artist-imagined images. The idea is relatively simple – a floating city that can hold about 50,000 people that is self-sustaining. Why? Well, what if the oceans do rise and we lose a lot of existing landmass, particularly with all of the coastal cities that we have around the world?