> Saltwater can be a bit colder before ice, so wouldn't it be better? I imagine it could actually be worse, as liquid saltwater below 0 would damage tissues ve

> Saltwater can be a bit colder before ice, so wouldn't it be better? I imagine it could actually be worse, as liquid saltwater below 0 would damage tissues very fast by freezing them. While fresh water is guaranteed to be above zero and therefore cannot damage tissues through freezing.