Sssssssssswimmer!

So...I saw the first snake of the season today.I went down to the dam, to see how much it had risen since all the rain yesterday, and spotted a line of bubbles racing from the edge away towards the middle.I assumed it was one of the turtles that live in the dam but no, a few moments later I spotted a snake swimming across the surface of the water. It stopped amongst the tops of the flooded reeds and was watching me as I was looking at it.It was black so I was relieved that it was not the deadlier Brown Snake. It looked a bit less than a metre long. I moved closer to get a better look but it dived under the water and disappeared.I didn't see it again.