More than half of the United States exists underwater. How, you ask? Simple: the borders of our continent don't stop where the land ends; they expand 200 nautical miles away from shore.

The Ring of Fire (also known as the Rim of Fire or the Circum-Pacific belt) is a major area in the basin of the Pacific Ocean where many earthquakes and volcanic eruptions occur.

The equator passes through the Pacific Ocean, the Atlantic Ocean, and the Indian Ocean, but it does NOT pass through the Arctic Ocean.

Alaska is the only U.S. state that borders two oceans (Arctic, Pacific) and is also the state with the largest coastline.