The Caribbean Sea.
The Gulf of Mexico to the north and west; the Caribbean Sea to the east.
the Carribean Sea is to the East of Yucatan.
The Yucatan Peninsula is in southeastern Mexico and borders the Caribbean Sea.
Weddell
The Yucatan peninsula, the Gulf of Mexico and the Caribbean Sea.
The Yucatán peninsula is in southeastern Mexico, the farthest any of the country extends to the east. Yucatan separates the Gulf Of Mexico to the north from the Caribbean Sea to the southeast.
The Gulf of Mexico is east of northern and central Mexico, and the Caribbean Sea is east of the Yucatan Peninsula.
Nothing. Mexico's Mainland is connected to the Yucatan peninsula trough the Tehuantepec Isthmus; such peninsula borders both the Gulf of Mexico and the Caribbean Sea. Maybe you are referring to the long, slim peninsula to the northwest, known as Baja California. Such peninsula is separated from the mainland by the Sea of Cortes or Gulf of California.
Right. Cancun is on the northeastern Yucatan Peninsula, facing the Caribbean Sea.
The Yucatan peninsula bounds the Gulf of Mexico to its North-West and projects into the Caribbean Sea.
The Red Sea borders the Arabian Peninsula to the west.
Of course; in fact there are two of them: Isla Mujeres as well as Cozumel, east of the Yucatan Peninsula.