Matthew Brandt has created unexpected and dramatic running of coloured ink by submerging printed photographs of water in the lakes or waterways that they represent. This is a great example of how creative photography techniques can (and should) be driven by the subject or theme that is explored.
South Korean artist Seung-Hwan Oh's "Impermanence" depicts "the visual result of the symbiosis between film matter and organic matter." He takes developed portrait photos and immerses them in water containing microbes, sometimes for a year or more. The microbes cause the silver halides to destabilize, at which point he makes these stunning digital scans.