Located in southern eastern Siberia, Russia, Lake Baikal holds the title of world's deepest lake, with a maximum depth of 5,315 feet. It's also one of the Earth's oldest freshwater lakes, boasting a ...

These include the Golomyanka, a translucent oil-rich fish, the Omul fish, Baikal sturgeon and the microscopic Epischura plankton that keep the water clear. The land surrounding the lake is known ...