Why the Mediterranean sea is dirtiest in world?

This statement is simply not correct, the Mediterranean Sea is not among the world's dirtiest seas. However, there are issues related to pollution and environmental challenges in the region due to increased human activities, urbanization, tourism, shipping, and mismanagement of resources. Some areas within the Mediterranean do face pollution problems but efforts are being made to address these through various conservation and sustainability initiatives. To accurately assess the state of marine pollution, it's essential to rely on scientific findings and monitoring data rather than generalized statements.