Lake Tanganyika’s waters lap Tanzania, Burundi, Congo DR and Zambia. It is the longest fresh water lake in the world and the second deepest after lake Baikal in Russia. The immense depth is because it lies in the Great Rift Valley, which also has created its steep shoreline. It reaches a depth of 1433 metres (4 700 feet), which is an astounding 642m below sea level.
The lake stretches north to south a distance of 677 kilometres (420 miles) and averages about fifty kilometers wide (31 miles). The clear waters host more than 350 different species of fish and is well known for aquarium fish exports and excellent angling.
The fertile circulating surface water, although not tidal, provides abundant plankton for its inhabitants which in turn provides much needed protein for both the local and export markets