Blue Lake, Nelson, New Zealand – The Clearest Lake in the World

(via Amusing Planet) Blue Lake is a small fresh water lake in Nelson Lakes National Park, in the northern reaches of New Zealand’s Southern Alps. In a study conducted in 2011, researchers of the National Institute of Water and Atmospheric Research  have found that the lake has extreme visual clarity of up to 80 meters, which is considered almost as “optically clear” as distilled water.