beautiful... such wondrous contrast you've achieved - seems almost like two worlds, the above in daylight, below twilight. you could also have used this in your series looking at astrology - Gemini? keep up the amazing art.
(P.s. A light to burn all the empires, so bright the sun is ashamed to rise and be in love with all of these vampires, so you can leave like the sane abandoned me... got that song stuck in my head since I saw your sig! )
I'd guess it's because the layer of water is really fine, and once the model had crouched in position they must have held still for long enough for the ripples to calm. Timing I'd guess; timing and patience.
"Who Let The Features Out? Who? Who? Who? Whoooooooo?" (Sing it to the tune of "Who Let The Dogs Out?") Hahaha. Congratulations, YOU made it in my very special 100th Daily Journal Feature (YES! 100TH!) in here: [link]