The largest lake of the Asia continent is the Caspian Sea. Located between Europe and Asia, the Caspian Sea is the world’s largest inland body of water by surface area, spanning approximately 371,000 square kilometers (143,000 square miles). It borders several countries, including Russia, Kazakhstan, Turkmenistan, Iran, and Azerbaijan. Despite its name, the Caspian Sea is technically a lake due to its landlocked nature, though it is often referred to as a sea due to its immense size and saline water. The Caspian Sea plays a crucial role in regional trade, transportation, and fisheries, supporting diverse ecosystems and human communities along its shores. Its unique biodiversity, including endemic species, adds to its ecological significance. However, the Caspian Sea faces environmental challenges such as pollution, habitat degradation, and fluctuations in water levels, which have prompted conservation efforts and international cooperation to protect its fragile ecosystems.