• Lake Chad is a historically large, shallow, endorheic lake in central Africa, which has varied in size over the        centuries.
• The freshwater lake is located in the Sahelian zone of West-central Africa. It is located in the interior basin which used to be occupied by a much larger ancient sea sometimes called Mega Chad.

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• The lake is historically ranked as one of the largest lakes in Africa. Its surface area varies by season as well as from year to year. Lake Chad is mainly in the far west of Chad, bordering on northeastern Nigeria.
• The lake is home to more than 44 species of algae. In particular it is one of the world’s major producers of wild spirulina.