Gulfbase [2] is an excellent collection of resources about the Gulf of Mexico, including: 

• searchable databases of its bays and estuaries; reefs, banks and islands; environmental issues;  institutions and organizations; people; and an InfoHub with articles on the laws, the science, and socioeconomic issues relevant to management and use of the Gulf.
• Mexican coral reef species checklist.
• general facts about the Gulf.
• events calendar.
• electronic books.

Gulfbase is a project of the Harte Research Institute for Gulf of Mexico Studies at Texas A&M University-Corpus Christi.

The Gulf of Mexico: Origin, Waters and Biota volumes 1 and 2 (of a 7-volume series), "Biodiversity" and "Ocean and Coastal Economy", were published in 2009 by Texas A&M University Press.