It is the Yucatan Peninsula.
The two countries that border the Gulf of Mexico are ; USA and Mexico. And The Peninsula in SE Mexico is the Yucatan Peninsula
Yucatan Peninsula is off the southeast coast of mexico.
Cuba
Cuba
Yucatan Peninsula.
Yucatan Peninsula - Gulf of Mexico and Caribbean Sea
Yucatán Peninsula
yucatan
The Yucatan.
Mexico shares the southeastern Yucatan Peninsula with both Belize and Guatemala. It also shares, but in name only, the Baja California Peninsula, with the United States.
United States, Mexico, Cuba.
Cuba