The park derives its name from a salt lake, the Tsimanampetsotsa, which literally means "the lake without dolphins". The presence of calcium sulphate in these waters makes fish life impossible. The lake is around twenty kilometres long. The different shades of colour that pass from turquoise blue to emerald green are stunning.
Tsimanampetsotsa is an excellent site to observe birds since it shelters more than a hundred species, such as grebes, the Madagascan plover or the famous pink or lesser flamingos.
The park offers four circuits to choose from, according to your tastes. One is more focused on bird watching, the other leads through the hills, caves and underground rivers that are home to a native blind fish. The third circuit is based on the plant world and the last one centres around lemurs.