Mexico and Central America Physical GeographyOnline version Use this map to help you study! by Brad Evers 1 Baja California 2 Gulf of California 3 Sierra Madre Occidental 4 Mexican Plateau 5 Sierra Madre Oriental 6 Gulf of Mexico 7 Greater Antilles 8 Caribbean Sea 9 Yucatán Península 10 Pacific Ocean 11 Panama Canal 12 Rio Grande