What Is the Gulf of Mexico?

Definition and Location

The Gulf of Mexico is a large semi-enclosed sea between the southeastern United States and Mexico. It connects to the Atlantic Ocean via the Straits of Florida and to the Caribbean Sea via the Yucatán Channel. It borders five U.S. states (Florida, Alabama, Mississippi, Louisiana, Texas) and Mexico and Cuba.

Physical Characteristics

• Size: ~1.5 million km² (600,000 sq mi), oval-shaped, ~1,600 km east-west, ~800 km north-south.
• Depth: Average 1,600 m (5,250 ft); deepest point Sigsbee Deep at 4,384 m (14,380 ft).
• Coastline: Sandy beaches, mangroves, coastal wetlands.

Ecological Significance

• Rich biodiversity: fish, marine mammals, sea turtles, coral reefs.
• Warm, shallow waters support extensive coral reefs, seagrass beds, mangroves.

Economic Importance

• Fisheries: Major source of U.S. seafood.
• Oil & Gas: Significant offshore reserves; drilling drives economy but poses environmental risks.
• Shipping & Trade: Vital route; major ports include New Orleans, Houston, Tampa.

Environmental Challenges

• Pollution from oil spills, industrial discharge, agricultural runoff.
• Hypoxic "dead zones" from nutrient overload.
• Hurricane vulnerability.