via wikipedia:
Emoto’s water crystal experiments consist of exposing water in glasses to different words, pictures, or music, and then freezing and examining the aesthetics of the resulting crystals with microscopic photography.[5][unreliable source?] Emoto claims that there are “many differences in the crystalline structure of the water” depending on the type of water source, which were taken from all over the world. For example, a water sample from a “pristine mountain” stream would purportedly show a “geometric” design that is “beautifully” shaped when frozen. On the other hand, “polluted water” sources will supposedly show a “definite distortion” and will be “randomly formed”