It's fairly close to the maximum theoretical rise, if all the ice melted (~80m, apparently)[0]. Also, here are some interesting maps, including Earth with 66m r

It's fairly close to the maximum theoretical rise, if all the ice melted (~80m, apparently)[0]. Also, here are some interesting maps, including Earth with 66m rise, Mars with oceans, and more[1]. [0] http://pubs.usgs.gov/fs/fs2-00/ http://pubs.usgs.gov/fs/fs2-00/ [1] http://www.johnstonsarchive.net/spaceart/cylmaps.html http://www.johnstonsarchive.net/spaceart/cylmaps.html