Lake Baikal, also known as the "Siberian Sea," is the world's deepest and oldest lake. It is situated in Russia and is known for its crystal-clear water, stunning landscape, and diversity of flora and fauna. Lake Baikal is also home to many unique natural phenomena, such as the endemic Baikal seal and the famous ice rings. There are several synonyms for this magnificent lake, including the "Pearl of Siberia," the "Blue Eye of Siberia," and the "Sacred Sea of Siberia." Each of these names reflects the awe-inspiring beauty and cultural significance of this natural wonder.