Ibcao style map: protruding land masses

Q&A
1

The Ibcao-map has some land masses (Greenland and parts of Nunavut) protruding the map frame, see here.

Can this be done with gmt alone, or do you need some post-figure processing?

2

I believe @PlanetGus has done this already?

3

You’re absolutely right: Animation : sea-ice v3.

Thanks Paul.