Snakes on a Seaplane

I was flying the seaplane today on Yates lake just below Lake Martin Dam. I often go here when the main lake is more busy than I would prefer. There are only a few houses on the lake and very few boats. It is about 10 miles long and 1500 feet wide for most of its body. It is an awesome seaplane lake with often perfectly glassy water since it is down in a canyon of sorts. Today my student and I were idling around in the middle of the lake just appreciating mother nature's grandure when my student noticed something moving pretty fast in the water. It looked like a large snake swiming across the lake. We taxied over to investigate, and sure enough it was a snake about four feet long . It was apparently as interested in the seaplane as we were in it. As we taxied by, it climbed up onto the back of the right float. It did not look happy, but then again, what makes a snake look happy? It stared at me as I peered through my open window and kind of rared back like it wanted to strike. I was too far away and inside the plane, which was where I intended to stay. I was concerned that it might find a more secure perch on the plane or maybe even gain access to the cockpit, but this was unlikely. I was not about to get out. I am sure that the weight and balance was not good with a ten pound snake that far back on the float. We gunned the plane a bit and it decided to depart the float. Now I was mad at myself for not snapping a picture with my iPhone.