I've not really much to say about this painting, except that I felt almost compelled to draw it after having seen the wonderful scientific images of Radiolarians drawn by Ernst Haeckel in 1904 (look here to appreciate his tremendous works).
For the anatomy reference, I credit the photographer Marcus Ranum (Mjranum-stock at DeviantArt) for using his pic.
I tried, after finishing the picture, to set Vibrance at high values, I think that it gives very nice colors, seen in a normal computer screen, without getting strange saturations effects.
And some close-ups:
