White-water rapids is my guess, but the original website is a 404 error page, and so far the pinners I've checked haven't listed what it is, except snow. The motion doesn't seem to correlate with snow.
Ginkgo biloba by Horticultural Art. a collection of framed leaf art would be lovely for autumn This really inspires me for my designs. Call on nature texture! Love the color, the way the leaves lay on top of each other as like fish scales