Gorgeous shot, perhaps more nature than science though. Still... this is an excellent picture... if we were doing nature macros this week, it would have been a 10. :)
The tonal quality of the background blur is very complimentary to the subject. I would love to see the sun (? -orange glow in lower third) a little less obscured to add another unobtrusive anchor to suggest depth beyond the foreground and to jazz the composition a bit.
Good use of DOF. Well composed and tecnically a very good image. With digital cameras it is generally difficult to capture something with so many linear segments without pixelation. You did a terrific job with this shot.
Nice macro shot. The water beeds add so much to the subject. I personally would have liked to have seen a little more of the right side cropped out. But that is just my feelings.
My only 10 vote in this challenge, I think this is simply beautiful.
The background is dark enough to be a perfect backdrop and yet retains a richness of it's own with great colour and a wonderful dappled pattern.
The colour and light within the main object are also just right - it's quite magical.
Hope you're looking at a ribbon for this one, but even if you aren't - you should know that it's really a rather stunning picture regardless.