There is so much ice in Antarctica (up to 4776m thick! [1]) that a large amount of what seems like it would be land is actually below sea level (it's massively weighed down, and some would rebound over time [2]). Here are some estimates of what would be left at first: https://vectormap.info/vector-maps-manual/map-antarctica-wit... and https://www.reddit.com/r/MapPorn/comments/pvqpg/the_archipel...

[1] http://www.antarctica.gov.au/about-antarctica/environment/se...

[2] https://en.wikipedia.org/wiki/Post-glacial_rebound