Smithsonian Highlights Legacies of the Largest Habitat Survey in the Deep Gulf of Mexico

DEEPEND scientists conduct midwater trawling from the R/V Point Sur using an opening-closing MOCNESS trawl with a 10 m² mouth area. (Photo provided by DEEPEND)

Scientists with the research consortium Deep-Pelagic Nekton Dynamics of the Gulf of Mexico (DEEPEND) conduct midwater trawling from the R/V Point Sur using an opening-closing MOCNESS trawl with a 10 m² mouth area. (Photo provided by DEEPEND)

The Smithsonian’s Ocean Portal published an article that takes readers back to the Deepwater Horizon oil spill and the need to estimate its impact on the Gulf of Mexico’s ecosystems. Although acknowledged as being extremely diverse at that time, the habitats of the Gulf of Mexico – especially its deep-water habitats – were also acknowledged as being one of the least studied in the world.

Shortly after the spill an intense effort, led by Tracey Sutton at Nova Southeastern University, was underway to catalogue this region’s species. The habitat surveys were initially funded through the National Oceanic and Atmospheric Administration (NOAA) and continued later through the Gulf of Mexico Research Initiative and the NOAA RESTORE Science Program. The effort resulted in the collection of thousands of samples and the subsequent identification and cataloging of 900 fish species, with 186 of those having never been seen before in the region. The effort also revealed a disturbing decline (75-90%) in species that serve as food for large marine animals.

One of the legacies of this monumental effort is that the Gulf of Mexico is now one of the best studied midwater habitats in the world. Another legacy is that this effort made clear the importance of surveying the ocean’s habitats before disaster strikes, especially areas where there exists potential for other oil spills.

Read the Ocean Portal article Oil’s Legacy in the Open Sea at

Here are related stories about this effort:

By Nilde Maggie Dannreuther. Contact with questions or comments.


GoMRI and the Smithsonian have a partnership to enhance oil spill science content on the Ocean Portal website.

The GoMRI is a 10-year independent research program established to study the effect, and the potential associated impact, of hydrocarbon releases on the environment and public health, as well as to develop improved spill mitigation, oil detection, characterization and remediation technologies.  An independent and academic 20-member Research Board makes the funding and research direction decisions to ensure the intellectual quality, effectiveness and academic independence of the GoMRI research.  All research data, findings and publications will be made publicly available.  The program was established through a $500 million financial commitment from BP.  For more information, visit

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