Would it be feasable for a man in his early to mid 20s, idle life but in rather good shape, to swim about a mile overnight? He's trying to escape from an island and has to do it under cloak of darkness.
It's in a tropical setting, however, the water was recently (about a day to two days prior) frozen. However, there's magical creatures about which may have changed it back to normal. So basically I have no idea what the temperature would be like, so can I have answers for both temperatures? (normal and recently frozen)
Oh yes, and he would have a small object made of a thin sheet of gold with him--what would either temperature do to that?