In Japan, there is a turquoise pond Bashny.Net

On the Japanese island of Hokkaido have a very beautiful tourist attraction - a pond with water cerulean. It is called a blue pond.

Blue Pond appeared after the construction of a local river dam to protect against debris flows, which always appeared after the eruption of the local volcano Tokachi. Over time, water has accumulated so much that it led to the emergence of a full reservoir.





However, the reason for the fantastic color of the water is still not exactly known. According to some hypotheses, the color gives the water, aluminum hydroxide, which reflects the short-wave blue as well as it makes the Earth's atmosphere. Also the color of water varies depending on the time of day, and even from that angle from which you look at it.

By the way, if you type in a glass of water, it is within the capacity and will retain its wonderful shade.

via factroom.ru