Which bodies of water did union ships occupy in union blockade?

During the Union blockade during the Civil War, Union ships occupied key bodies of water including the Atlantic Ocean, the Gulf of Mexico, and various coastal rivers and inlets. Major ports that were targeted included those in the Confederate states, such as Charleston, Savannah, and New Orleans. The blockade aimed to prevent the export of cotton and the import of supplies to the Confederacy, significantly impacting its economy and war efforts.