Kalimantan is the specific name of the province of Indonesia, not for the island. The province does not take up the whole island, so it should not be accept (would you accept Dominican Republic as the name for the island of Hispaniola?).
No, the name is very misleading there, Zeeland is in the Netherlands, in the South where you see the Rhine and Meuse delta. This is where you can find things like the Oosterscheldekering to protect it against floods, and this is the province that gave its name to New Zealand (Zealand being the archaic English name of Zeeland, and the country is called like that because it was discovered by Abel Tasman and first mapped by the Dutch). To avoid confusion, I always call the island where Copenhagen is situated by the Danish name, Sjælland.
Anyone else think Sardinia looks like if France was squished in a vice? All I could think of when I looked at it was "SKINNY FRANCE" and my brain wouldn't work. At least I didn't type it.