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The worlds deepest lake, lake Baikal, is in Siberia. It is also the largest freshwater lake in Eurasia and the oldest lake on the Earth. At least 1,500 unique species live there - they cannot be found anywhere else on the planet! The water in the lake is so clear that if you drop a coin, it can be clearly seen a hundred feet below the water.

1Special in many ways
2Tourist attraction
3Protection of the ecosystem
4Extinct species