Polynomial art. CD0, a blue and turquoise image (with ellipse detail), a fractal, the Julia (and Fatou) set of a polynomial.
CD0 detail

CD0

CD0, an example of fractal art, the Julia (and Fatou) set of a degree 4 polynomial. (This picture was made using the escape time algorithm which is described here for the Mandelbrot set and its associated filled-in Julia sets.)

Here is a large canvas fine art print of this picture.