What is the world's largest lake?
Caspian Sea 78,200 km3 (18,800 cu mi)
The Caspian lake is the largest on our planet, with a surface area of 371,000 km² (143,000 sq. mi.) has characteristics common to both seas and lakes. The Caspian became landlocked about 5.5 million years ago, and including the three littoral provinces of Gilân, Golestân and Mâzanderân. The salinity of Caspian Lake changes from the north to the south. The northern part of the lake freezes in the winter. The Caspian is home to seven different sturgeon species, some of which are found nowhere else in the world.
Baikal 23,600 km3 (5,700 cu mi)
The oldest freshwater lake in the world, it originated 20-25 million years ago. Lake Baikal is the deepest and among the clearest of all lakes in the world. Its average depth is 730 m and its maximum depth in the middle 1,620 m. It is also the world's largest volume of fresh water 23,000 cubic km. Contains 27 islands, fed by as many as three hundred and thirty inflowing rivers and hosts 1,085 species of plants and 1,550 species and varieties of animals. Baikal is often called a museum of climates because of the variations that result from differences in distance from the lake, the shape of the coastline, the relief and surface of the shores etc. It is 636 km long, 79 km wide.
Tanganyika 18,900 km3 (4,500 cu mi)
Lake Tanganyika is the second largest freshwater lake by volume, and the second deepest in the World . Tanganyika is about three million years old and covers 32,900 km2 (12,700 sq mi). It is Africa’s oldest lake, and contains almost 17% of the world’s available freshwater supply. More than 500 fish species live in Lake Tanganyika and commercial fishing has become big business in Tanzania.