When you zoom out, it doesn't display the oceans because it's harder to see, and the last viewable area is just one ocean.
It is also harder to see the various colors that you would normally see on the map when it's not zoomed, but it is good to know there is another way to view the screen
It is not practical and an upgrade would be needed.. Zoom in, zoom out, an "edit mode" where you can point, write so we dont have to do it with lightshot.. Just an idea