* cell in the middle, then going into a cycle of repeatedly selecting a random
* seal cell and transforming it into land if it is neighbor to land; the cycle
* ends when a land cell is due to be created right at the border of the map.
* cell in the middle, then going into a cycle of repeatedly selecting a random
* seal cell and transforming it into land if it is neighbor to land; the cycle
* ends when a land cell is due to be created right at the border of the map.