Inland seas are large bodies of saltwater that are partially enclosed by land. They are typically connected to the ocean but are often shallower and have limited water exchange with the open sea. Examples of inland seas include the Mediterranean Sea and the Black Sea. These seas can support diverse ecosystems and are important for regional climates. Inland seas can also serve as significant economic resources. They often support fishing industries, tourism, and shipping routes. Additionally, they can be affected by human activities, such as pollution and overfishing, which can impact their health and biodiversity.