Confédération Mondiale des Activités Subaquatiques (CMAS) is an international federation that represents underwater activities in
underwater sport and underwater sciences, and oversees an international system of recreational
snorkel and
scuba diver training and recognition. It is also known by its English name, the
World Underwater Federation, and its Spanish name,
Confederacion Mundial De Actividades Subacuaticas. Its foundation in
Monaco during January 1959 makes it one of the world's oldest
underwater diving organisations.