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Research on interconnections among Gulf of Mexico ecosystems.
Outreach for decisions based on those interconnections.

NGI News

NOAA-Supported Scientists from NGI Research Partner, LOUISIANA UNIVERSITIES MARINE CONSORTIUM, Releases Report for Gulf of Mexico "Dead Zone"

August 4, 2022

Distribution of bottom-water dissolved oxygen concentration for July
Distribution of bottom-water dissolved oxygen concentration for July 25-29, 2022. The combined area of less than 2 mg l-1 and 1 mg l-1 are the darkest colors and are outlined by the black line. Data source: NN Rabalais*+, RE Turner* & C Glaspie*, *+Louisiana State University, and Louisiana Universities Marine Consortium. Funding: National Oceanic and Atmospheric Administration, National Centers for Coastal Ocean Science.
Low dissolved oxygen in the water is often referred to as a "dead zone" because most marine life either dies or if they are mobile such as fish, leaves the area. Habitats that would normally be teeming with life become biological deserts.

The second largest dead zone in the world is located in the U.S., in the northern Gulf of Mexico.


Visit the Gulf Hypoxia website at for maps, additional graphics and more information concerning this summer's research cruise and previous cruises.