I guess I lied, I did find one underwater pic that did actually turn out into more than a blur. All of the formations under the water were massive and cone shaped like these, and whenever the sunlight from way above managed to penetrate into the water, the stalagmites had a weird phosphorescent kind of glow, due to the blue-green color of the water in the lake. It gets the color from the fact that it’s very pure (as a subterreanean source = no pollutants or particulate matter) and the blue color is helped along by the high level of magnesium in the water (making it unsafe to drink.)
Bonito, Mato Grosso do Sul, Brasil 2008
Wanderlust Wonderings 