Simultaneous Turns & Drowning

[Chazar]

When does drowning occur in a game with simultaneous turns?

Say I end my own turn with a hero riding an eagle over water. The enemy had not yet finished his turn and attacks the hero, killing the eagle but not the hero. The enemy then end his turn as well.

When the new turn starts, will I still have a chance to save my hero (by bringing another mount/boat to him or by spending an ability point on water walk, etc.), or will the hero have already drowned?

Given the rules, I would expect that my hero would still be there. I would expect a drowning check to occur whenever a player presses end-turn, but only for the heroes of that player who ended his turn, but not for enemy heroes.

[SnotlinG]

Right now there is no drowning, so its not a problem