Photo: Nicky.lew [Flickr]
Environmental Graffiti blog has a really nice round up of some of the world's most colorful lakes - turquoise and blue lakes, green and yellow lakes, purple and red lakes and so on.
This one above is the Red Lake, a large salt lake in Uyuni, Bolivia (the red color is caused by microscopic organisms living in the water).
Link - Thanks Linda!
This isn't the only example; remember the lists of creepy trees and creepy clouds?
Lake Vui is located on Ambae island in the South Pacific nation of Vanuatu. It underwent a transition from beautiful, tranquil turquoise to bright blood red over the course of a couple of days. While the event occurred during a significant increase in volcanic activity, scientists were never able to adequately explain what caused the sudden transformation.
Ambae is best known to the world as the 'Bali Hai' of James A. Michener's timeless Tales of the South Pacific.