Had a 10 pt come across a flooded field at us once. He was a giant. He got about 1/2 way across and near the edge of our decoys and turned around and went back to the same tree line he came from.
I had some friends fishing the lower Chesapeake Bay years ago and snapped some pictures of two Doe's swimming across the bay. Why the two deer went out that far in the bay is beyond me.