Gulf of Mexico

The Gulf of Mexico (Spanish: Golfo de México) is a large body of water that is part of the Atlantic Ocean. It is mostly surrounded by the North American continent. On one side, it touches the Gulf Coast of the United States, and on the other side, it touches several Mexican states such as Tamaulipas, Veracruz, Tabasco, Campeche, Yucatán, and Quintana Roo. To the southeast, it is close to Cuba.

The Gulf of Mexico basin is shaped roughly like an oval and is about 810 nautical miles wide. Its floor is made of sedimentary rocks and recent sediments. It connects to the Atlantic Ocean through the Straits of Florida and to the Caribbean Sea through the Yucatán Channel. Because of these narrow connections, the gulf does not have very big tides.

The gulf covers about 1.6 million square kilometres and holds a huge amount of water—roughly 2.4 million cubic kilometres. It is very important for oil production, as it provides a large amount of oil for the United States. Moisture from the gulf also helps create weather patterns across the United States.

Name

See also: Gulf of Mexico naming controversy

The Gulf of Mexico is named after Mexico. The name Mexico comes from the Mexica people, also called the Aztecs. The Aztecs had special names for the gulf, like Chalchiuhtlicueyecatl, meaning 'House of Chalchiuhtlicue', the goddess of the seas. Early explorers called the gulf different names, such as "Sea of the North" or "Gulf of Florida". The name "Gulf of Mexico" started in 1550 and has been widely used since the mid-1600s.

In 2025, some people talked about changing the name to "Gulf of America". But many, including leaders from Mexico, did not agree. Most people in the United States still call it the "Gulf of Mexico".

Extent

The Gulf of Mexico is a large body of water next to the Atlantic Ocean. The southeast edge of the Gulf starts at Cape Catoche and goes to Cape San Antonio in Cuba. From there, the line follows the 83°W line north to the Dry Tortugas, then east to Rebecca Shoal and through the Florida Keys to the mainland near Florida Bay. All the narrow waters between the Dry Tortugas and the mainland are part of the Gulf.

Population

The Gulf Coast of the United States includes parts of five U.S. states. In 2016, about 15.8 million people lived there. Big cities are Houston, Texas; New Orleans, Louisiana; Mobile, Alabama; and Pensacola, Florida.

Six Mexican states along the gulf have about 19.1 million people. Three areas of northwest Cuba, including Havana, have another 3,211,000 people.

Geology

The Gulf of Mexico formed about 300 million years ago when Earth's plates moved. Before this, the area was dry land that was part of a large supercontinent called Pangaea. Over time, the land split apart and created a basin that filled with water. This happened in steps, with the basin first connecting to the Pacific Ocean and then the Atlantic Ocean.

As the basin formed, layers of salt and other minerals built up. Later, as the Earth's crust cooled and sank, the basin got deeper. Today, the Gulf of Mexico has different parts, including deep areas called the Sigsbee Deep and shallower areas like the continental shelf. One interesting feature of the Gulf are brine pools—areas where very salty water collects on the seafloor. These pools can only support simple life forms like certain bacteria and small animals.

Hydrology

The water in the Gulf of Mexico moves with the currents of the Atlantic Ocean. Water comes into the Gulf from the Caribbean Sea through the Yucatan Channel as the Yucatan Current. It then flows out to become the Florida Current, which turns into the Gulf Stream. These currents stay near the surface because the channels they flow through are not very deep.

The Yucatan Current links to the Florida Current through a big loop named the Loop Current. This loop can stretch into the northern parts of the Gulf and sometimes makes smaller spinning movements of water called eddies. These eddies travel around the Gulf and change how water moves there. The Loop Current is part of a larger pattern of ocean currents called the North Atlantic Gyre, which also includes the Gulf Stream, North Atlantic Current, Canary Current, and North Equatorial Current.

History

The history of the Gulf of Mexico goes back thousands of years. Early people lived along its coasts. They hunted small animals and gathered plants for food. Over time, they learned to fish and grow crops. This helped them build stable communities.

When Europeans first arrived, they met many different groups of people. Explorers like Christopher Columbus and Hernán Cortés began to map the area. Many ships traveled through the Gulf. Some ships were lost along the way. These early journeys helped start new settlements and changed the lives of the people who already lived there.

Geography

The Gulf of Mexico is surrounded by the United States, Mexico, and Cuba. On the U.S. side, it touches Florida, Alabama, Mississippi, Louisiana, and Texas. In Mexico, it touches Tamaulipas, Veracruz, Tabasco, Campeche, Yucatán, and Quintana Roo. Cuba also has a small coastline along the gulf.

The gulf is an important place for fishing, with many fish and shellfish living there. It also has oil fields that are used for energy. The water and land around the gulf provide many resources for the countries that border it.

Shipwrecks

An old ship called the Mardi Gras sank a long time ago near the coast of Louisiana. People found it deep underwater in 2002 and learned about the past from it. They made videos to share what they discovered.

In 1942, a ship named SS Robert E. Lee was attacked far from land. After the attack, the ship sank quickly. Many people were sadly lost in this event. The wreck was later found deep in the ocean.

Biota

The Gulf of Mexico is home to many different kinds of life. You can find tiny organisms, small creatures, and larger animals like crabs, special sea animals called sea pens, and fish that live near the bottom. It also has whales, including a special group of Bryde's whales that live only in this area. These whales are considered one of the most endangered whales in the world. The Gulf provides lots of fish, shrimp, and shellfish each year.

Scientists from the Smithsonian Institution study the plants and animals from the Gulf. They want to understand how events like the Deepwater Horizon oil spill affect the environment. These collections help experts learn more about the Gulf and its future.

Pollution

The Gulf of Mexico has many environmental problems. One big issue is pollution from farms that flows into the water. This pollution can create areas with very little oxygen, called "dead zones." These areas make it hard for sea creatures to live.

Another major problem is oil drilling. There have been many small accidents over the years, and two very large oil spills. The first was in 1979 when an oil platform called Ixtoc I exploded and spilled oil into the gulf. The second was in 2010 when the Deepwater Horizon oil platform exploded and sank, causing a large spill that harmed wildlife and damaged the fishing industry along the coast.

Meteorological significance

The warm waters of the Gulf of Mexico help create strong Atlantic hurricanes, like Hurricane Katrina. These warm temperatures give hurricanes energy to grow bigger and stronger. The Gulf’s waters are important for weather patterns, especially for tornadoes in a region called Tornado Alley. When moist air from the Gulf meets dry air from the Rocky Mountains, it can create severe storms and powerful tornadoes.