I've always been awestruck by Sargent's ability to depict reflections on water. And seeing his paintings in person just increased my wonder and appreciation for his skill. You can understand why the Wall Street Journal used words like fluid and evanescent when describing his work.
I didn't take any pictures today, but here's an image of reflections on water from Tomales Bay in August 2012. It's very abstract, but it's the first picture that came to mind when I thought about the Sargent paintings.
If you happen to be in the Boston area and can make it to the Sargent exhibit, I highly recommend it! And around the corner in a smaller gallery room, don't miss Audubon's Birds, Audubon's Words. The extra large John James Audubon prints include American White Pelican, Great Auk, and Ivory-billed Woodpecker among others.