Diversified Land and Water Natural features, living and nonliving, are what create the regional links in the Gulf of Mexico. Throughout the region natural processes are driven by diverse latitudinal weather patterns and ocean currents, creating differing topography from mountains to beaches and different types of soils in a continuing gradient from North to South, East to West. The Gulf of Mexico is the ninth largest body of water in the world and is referred to as the “Mediterranean of the Americas.” It contains by volume 2,434,000 cubic kilometers of water, or 643 quadrillion gallons, and it is believed to have been formed approximately 300 million years ago as a result of seafloor subsidence, i.e., gradual sinking of the seafloor. The land that forms the Gulf’s coast is mostly low-lying and characterized by marshes, swamps, and sandy beaches. It is this condition that makes the Gulf especially susceptible to storm surge and sea level rise. About 5.7% of the total population in the Coastal Belt lives in areas with elevations below 3 m; 27.2 % of the total population lives below 12 m.
Percent of Total Population Living Below a Certain Elevation in the Coastal Belt, 2010 Mexico
Land & Seascape
Aerial view of East Timbalier Island, Louisiana, USA. Photo Credit: Erik Zobrist (NOAA Restoration Center)