Imagine diving deep down a lake, as deep as 80 mts, only to find crystal-clear visibility! Yes, a dive down this lake is as good as the visibility that ones gets with distilled water (80 mts). Here, we take you to the Blue Lake, set in New Zealand's South Island. Researchers were more than just surprised to discover such stark visibility at the Blue Lake, which is now pegged as the lake with the world's clearest water lake. Back in 2011, the National Institute of Water and Atmospheric Research (NIWA) conducted a study, and found that the lake water here has extreme visual clarity.
Read more: World's cleanest lakes!