I especially like this one.
Might I ask with what kit have you been snapping these? And do you recall a general shutter speed, f/stop, ISO?
Thank you, John.
If I remember right, I firmly set the camera to f8 on the Saturday (which is when this photo was taken) and had the camera decide on the shutter speed of its own accord. I felt it was time to go back to some kind of semi-automatic (my choice was "aperture priority", wasn't it?), for I would not have had the TIME to do too many things manually and NOT lose most of the scenes. (I lost a good many, anyway, where they had their arms in front of their faces, or actually still - or again - had their faces under water, or where - in the case of the fastest races - there were only white bubbles to be seen, but no faces :roll:

).
I worked with the Sigma 70-300mm lens for most of the time, and had it pulled out quite far often to zoom in on the individual swimmers, so DOF was still fairly shallow, even at f8.
So on Sunday, which was a SUNNY day (unlike larger parts of Saturday), I went to f13
and could still use the polariser to beat the reflections, and shutter speed was still fast enough. Ah, and ISO was at 200 ... and I could go look up the shutter speed for this particular photo for you, but don't know it by heart.