'Katara?'
Aang peered tentatively around a tree trunk and stopped in his tracks. Katara was standing knee-deep in the river, bending a ribbon of shimmering water around her; her hips swayed slightly as she moved her hands fluidly about her person, mirroring the body of water she was controlling. The nearly-full moon was high in the sky and cast a soft, silvery light over her figure – her cropped white singlet and skirt seemed to glow, and even from where he stood Aang could see every water droplet that clung her to bare waist glittering like diamond dust.
He felt suddenly embarrassed, as though he had walked in on something he wasn't supposed to see. But he could not look away. Concentration was written over her face and her brow was dipped with the intensity of her focus. The moves she was performing were not difficult or violent, she was merely absorbed in the very life and embodiment of the liquid itself. He knew this to be her form of meditation. She was in her element – quite literally.
The river babbled and gurgled as it flowed, sounding like the sweetest and most appropriate song to the sight. It was quiet and yet full of life.
Aang's heart swelled in his chest as he watched her progress. Katara's body moved like the water itself, swaying, twisting, bending and swirling in perfectly elegant movements. It was almost hypnotic and Aang soon lost track of how long he had been standing watching her.