The Caspian Expert system,- A Directory of Marine and Freshwater Professionals of the Caspian Sea Area - is a database containing information on individuals active on issues related to the caspian sea area.

Caspian Sea which is known as the world's greatest lake, has always been a matter of great power because of its geopolitics and economical importance, various cultures and languages created around it and above all its significant oil reserves.

• Islamic Republic of Iran
• Russian Federation
• Republic of Kazakhstan
• Republic of Turkmenistan
• Republic of Azerbaijan