Discover the countries that border the U.S. by sea, including their approximate distances and shared water bodies like the ...

NOAA-supported scientists announced today that this year's Gulf of Mexico "dead zone"—an area of low to no oxygen that can ...

The U.S. and Mexico both have coastlines along the Gulf, and a State Department report from the 1970s said the maritime boundary between the two countries begins at the center of the mouth of the ...

The name “Gulf of Mexico" came nearly 300 years before Mexico — which lays claim to most of the gulf — became an independent country, and it has appeared on maps for centuries. Mexicans and ...

Discover the two land borders of the U.S. and the states that share them. Explore the U.S.-Canada border, the longest in the ...