this was taken at ft myers beach in florida. very popular pier. i'm very glad that you like it.
you can learn more about Sigma's SD9 and SD10 here [link]
it is not an inexpensive camera but i think it is the best value out there.
Great shot, I really like how the shadows from the hence casts down on the ground, quite interesting pattern it makes. Also, I like the light of the shot, especially that you removed the water in the top from both sides...