Gulf of Mexico numerous bays and smaller inlets. A number of rivers empty into the gulf, most notably the Mississippi River and Rio Grande in the northern gulf, and the Grijalva and Usumacinta rivers in the southern gulf. The land that forms the gulf's coast, including many long, narrow barrier islands, is almost uniformly low-lying and is characterized by marshes and swamps as well as stretches of sandy beach. The Gulf of Mexico is an excellent example of a passive margin. The continental shelf is quite wide at most points along the coast, most notably at the Florida and Yucatán Peninsulas. The shelf
Harte Research Institute for Gulf of Mexico Studies Harte Research Institute for Gulf of Mexico Studies The Harte Research Institute for Gulf of Mexico Studies (HRI) at Texas A&M University-Corpus Christi is the only marine research institute dedicated solely to advancing the long-term sustainable use and conservation of the world’s ninth-largest body of water. Established in 2001, HRI integrates outstanding scientific research with public policy to provide international leadership in generating and disseminating knowledge about the Gulf of Mexico ecosystem and its critical role in the economies of the North American region. HRI's Vision: A Gulf of Mexico that is ecologically and economically sustainable HRI's Mission: Science driven