As John said, most of them died when they hit the water.
Half of them would be dead before they hit the water.
The guy was dead before his gun hit the water.
The first two shots hit the water in front of the fish.
By the time we hit the water, everyone was swimming someone else's race.
He hit the water with less grace than his friends.
This stone hit the water with greater force than the ones that had gone before.
There was a splash as the body hit the water.
They hit the water and stepped quickly aside to make way for others coming down after them.
And that is when the swim team hit the water.