The pond is gradually filling up. The photo has a shortening effect, the island is much smaller than it appears the whole pond it about 100 yards long. I would have said metres but now we have left the EU.

Neither did I Stanley until it surfaced! It took me a moment to understand what I was seeing but by the time I had taken my phone out of my pocket it had eaten its fish and gone under again. I waited for it to come up but it was probably 20 yards away by the time it did and then I lost it completely.