Spain, officially the Kingdom of Spain (Spanish: Reino de España), is a sovereign state largely located on the Iberian Peninsula in southwestern Europe, with archipelagos in the Atlantic Ocean and Mediterranean Sea, and several small territories on and near the north African coast. The mainland of Spain is bound to the east and south by the Mediterranean Sea, with the exception of a small border with Gibraltar. To the northeast and north by France, Andorra and the Bay of Biscay. And to the west, northwest and southeast by Portugal and Atlantic Ocean. It is the only country to possess both the Atlantic and Mediterranean coasts, along with France and Morocco. Extending to 1,214 km (754 mi), the Portugal–Spain border is the longest uninterrupted border within the European Union 😎 
Five of the Atlantic Member States have each defined the EEZ for the Atlantic, which includes the UK. On 19 May 2006, France, Ireland, Spain and the United Kingdom of Great Britain and Northern Ireland (hereinafter referred to as the “four coastal States”) collectively submitted, through the Secretary-General of the United Nations to the Commission on the Limits of the Continental Shelf, information on the limits of the continental shelf appurtenant to these four coastal States in the area of the Celtic Sea and the Bay of Biscay lying more than 200 nautical miles away from the baselines where the territorial waters are measured. This is in compliance with Article 76 paragraph 8 of the United Nations Convention on the Law of the Sea. Portugal filed a claim in May 2009 to expand its jurisdiction over the neighboring continental shelf. This is currently under review after Morocco’s reservation in July 2015. 
Mexico’s coastlines are also located on the Pacific and Atlantic Oceans. It is located in the south of North America. The country’s coastline runs along the Pacific Ocean at the western border. At the Atlantic Ocean, it borders the eastern boundary. Particularly, Mexico’s eastern border borders the Gulf of Mexico (and the Caribbean Sea), which both are marginal waters of the Atlantic Ocean. Mexico has several ports located along coast of the Pacific Ocean, the most notable being Manzanillo, Lázaro Cárdenas, and Puerto Chiapas. Manzanillo in particular is considered to be the busiest port of the nation. Matanzas is Mexico’s other port, located in the Gulf of Mexico. Heather M. from Kigali, Rwanda (August 29, 2020). 
Nikisha Neusome worldatlas.com, describes how oceans cover about 70.8% of the Earth’s surface. They serve as the planet’s largest habitat and also helps in regulating the global climate. Five major areas make up the World Ocean: The Pacific, Atlantic Ocean, Indian, Southern and Arctic Ocean. The Atlantic Ocean is the world’s second-largest Ocean after the Pacific Ocean. It covers approximately 29% of the total water surface and 20% of the Earth’s total area. It is shaped like an S and lies between North and South. South America To the west, Africa to the east and Europe to to the east. It is connected to the other four world’s oceans and divided into North Atlantic and South Atlantic Ocean by the equatorial counter current. Shavonna Saucedo, for her incredible insights.