I vote on quality, scarcity of the 'shot', background, and of course, position.
I believe that number 8 aro isnt real. Who has ever seen a pectoral with a negative effect? I didnt like it because I believe that it has been photoshopped to a degree.
Number 19, to me, appeared to be the surface of the wter with floating plants and a mist-maker. Not very hard to comprehend.
I voted for Number 14 because the colours are fantastic, awesome position, its a rare specimen, top notch camera quality and fish on black.