small
|
medium
|
large
|
view full-size
image -- 1000 x 750)
By far the most spectacularly colored water in Yellowstone is this hot spring. There must be a particularly large algae colony of Rhodophyta (Red algae) in this water, because the color was so vivid. Since the presence of algae depends upon the degree of heat in the water, coloration is a byproduct of this heat as well. As you can see from the steam rising in the background, this spring is very hot.
North America
view full-size
image -- 1000 x 750)