Hello,
Here are some quaternion Julia set fractals I've been working on.
Julia sets are similar to Mandelbrot sets. Quaternion Julia sets are similar to complex Julia sets, except that they're four-dimensional. I put a more complete explanation over at my blog (
http://www.egregium.us/quaternion-julia-set-fractals/ ). If you scroll down, there is a video too.
If anybody is interested in prints, I put some high quality (445 dpi, canvas) prints on
etsy. Hope you like these (click to enlarge):