I feel curious about Earth having one supercontinent in a global ocean; it seems a little lobsided. Could it be that, once upon a time, Earth was much smaller, and then water was added? If a small planet was somehow globally deluged (No, not Noah's Ark - millions of years earlier) would the sudden new weight massively compress and lower or even sink some of the land levels, and maybe split the surface - Pangaea - into new continents? If a lot of water broke through and stayed underground while more water at sea level became more ocean, would this result in the planet swelling, and land masses seeming to seperate proportionately, like maps drawn on a swelling balloon? Did water split Pangaea? If so, where did it all come from? Please tell me if this is possibly a workable scenario. Thanks. Seraph316.