I think the word will become one huge Ocean and people people would have to make floating cities and feed of of fish because most animals would die because of lack of food. I would be like raft tell me if you have played that game or seen it or it could be like subnautica tell me if you have played that to. That is what I think what would happen if the polar ice caps melted what do you think would happen if the polar ice caps melted tell me in the comments below i sound like a YouTuber.