Dive, Dive, Dive!

I have finally managed to catch a Coot / Moorhen? mid dive.
I went to look at a different pond today and it is stunning with a small amount of water fowl to point a lens at. I think I got a couple of nice shots today but this is the one that makes me smile.
I have put a more identifiable photo of the bird as an extra photo and I would love it if someone can tell me what it is please