The prettiest of 50+ attempts at photographing a droplet hitting the water surface. I guess this particular shape ("corona"?) usually either doesn't last very long or doesn't form at all, because it only showed up in the one photo.
Some close-ups of other attempts:
"the blob"
"evil eye"
"the blob"
"evil eye"
You will achieve different results by varying the amount of water on the surface and by adjusting the distance from which you drop the water. Also, you probably know Harold E. Edgerton, he might be a great help on your quest.
Still, love the blob.
I work for an environmental laboratory and I would like to use your water droplet picture for a water brochure. Is this okay. Please contact me at sarah@alloway.com
http://www.rit.edu/~andpph/exhibit-3.html