When artistic photos is the issue, in my mind pops irrealistic almost ghostly or even angelic/morbid picture. And as much I like all kind of pictures, this kind is undoubtedly my favourite and here it's a very good example of that.
Really good artistic photos and even being taken under water we get the idea of freedom and in some cases seams the model is jumping on the air and not under water. It's freedom in a physical, liquide element.