If you want to do that, you should also plot out all the land reclaimed, then again I find all this funny since it was due to an ice age that created land bridges and people are surprised that we’re still coming out of an ice age and the water levels are still rising.
Actually that isn’t true, I know some grey nomads that head north every winter and they’re collecting a lot of data that can be used to build out the map data, so the answer is to retire, if you haven’t already, and become a grey nomad and deck out your caravan/camper with a nice 3G link, a netbook/notebook and some kind of GPS module for the computer 