Liquids become denser in their solid state. Except water. Ice is less dense than liquid water. This is the reason why it floats.
I also tried "besides," I think that should be accepted as they are indistinguishably synonymous in English... :-/
I translated this as excluding water and it was marked wrong - is not excluding the same as except for?
Bar is rarely used in the sense of "except" (at least in American Englis), except for the phrase "bar none".
Liking the mixture of male/female voices, but "Oprócz" sounds a bit weird here in the male voice? Anyone else?
Maybe a little bit? I'm not sure if I would notice any problem if I wasn't looking for it.