Reflections in Water and Symmetry

Oh dear - your browser doesn't understand Java!!! Time to talk to the Computer Co-ordinator about upgrading your browser software.
If you could see it you would see a mountain reflected in a really cool water effect.

If an object is reflected in water many people believe
the image has line symmetry.

But is it really a 'mirror image'? Is it really symmetrical?
What are your thoughts?

FYI this effect was made using a java applet.