The ocean that borders the East Coast of the United States is the Atlantic Ocean. This expansive ocean stretches along the eastern seaboard, providing significant economic and recreational opportunities. The Atlantic Ocean connects the U.S. to Europe and Africa and influences the climate and weather of the coastal states. It plays a crucial role in shipping, fishing, and tourism, with many major cities such as New York, Miami, and Boston located along its coast. Additionally, the Atlantic is known for its rich biodiversity and is a vital habitat for numerous marine species, making it essential for ecological health.