This dataset reports presence or absence data and other environmental cruise data collected in the Gulf of Mexico during R/V Pelican cruise PE18-01 (LF2017A) from 2017-07-01 to 2017-07-04. Larvae were collected with paired 61-cm bongo nets with 333 and 500-micron mesh. General Oceanics Flowmeters (Model 2030R, Miami, FL), were placed within net frames to determine the surface area sampled by each net. Fish larvae and early juveniles collected with net gear were preserved onboard in 95% ethanol. The dataset includes sampling and identification of larval fishes from epipelagic tows and environmental data (temperature, salinity, dissolved oxygen) from 47 stations. Sea surface temperature, salinity, and dissolved oxygen were measured at the surface of each station using a Sonde 6920 Environmental Monitoring System (YSI Inc., Yellow Springs, Ohio, United States).

This dataset reports species caught using longline and trap sets during R/V Apalachee cruise in the Northern Gulf of Mexico from October 8-15, 2013. Species data includes species name, sex, weight, length, and maturity state, if available. It also report if samples were collected from individuals for other analyses, though the results of those analyses are not reported. Information about the sets include bait used, gear, effort, and sea state. Additional files in the dataset report pressure and temperature data collected during longline trapping activities. The overall objectives of this research include using large chevron traps and demersal longlines to describe and examine differences in the species assemblages and relative abundances of demersal fishes associated with the eastern and western walls of DeSoto Canyon and the adjacent continental slope (75-2000 m deep) and collecting specimens and samples (including curation of new species) to aid in resolving phylogenetic uncertainties and understanding life history traits in collected taxa.

Physical and profile oceanographic data were collected aboard the ENDEAVOR in the Gulf of Mexico from 2010-06-17 to 2010-06-30 in response to the Deepwater Horizon Oil Spill event on April 20, 2010, by the Subsurface Monitoring Unit (SMU), which consisted of multiple government and corporate agencies. These data include temperature. The instruments used to collect these data included CTD along with other physical sampling devices. More specific information about each dataset is located in their individual metadata records. The CTD data underwent preliminary quality assurance and control procedures at the National Coastal Data Development Center (NCDDC). Cruise level information consisting of data management documents, cruise reports and plans, videos and pictures, and other miscellaneous documentation were gathered by the data managers.

This dataset contains CTD data collected aboard R/V Endeavor cruises EN509 and EN510 (sequential legs) using a CTD-rosette system in the Gulf of Mexico from 2012-05-26 to 2012-07-04. The physical and chemical properties in the water column at the ECOGIG seep and other study sites were characterized The dataset also includes binned profiles and bottle files.

This dataset contains fish data collected using fish traps and demersal longlines and includes biological data, for some species, such as length and weights. Additional data includes date, time, set locations (latitudes, longitudes), gear deployed and bait used. These data were collected during the R/V Apalachee cruise AP-1314 on January 13, 2014. The objectives of this project included to describe and examine differences in species assemblage and relative abundance of demersal fishes in the Gulf of Mexico.

This dataset contains temperature, salinity, dissolved oxygen, and current velocities obtained from the long-term Fisheries Oceanography in Coastal Alabama (FOCAL) mooring operated by the Dauphin Island Sea Lab (DISL). The mooring is located at 30°05.410'N, 88°12.694'W, along the 20-m isobath about 25 km southwest of Mobile Bay, Alabama. This dataset contains non-continuous data collected between 2007-10-01 and 2016-08-19 using a variety of instruments, including thermistors, CTDs, and a bottom-mounted, upward-looking RDI 600 Workhorse Sentinel ADCP. Parameters include temperature; salinity; current vectors, speeds, and direction; dissolved oxygen and oxygen saturation; and sound velocity, although not all datasets contain each parameter. The data are in ASCII format, and the raw ADCP data is also included.

Conductivity Temperature and Depth (CTD) measurements were collected aboard the M/V Sarah Bordelon, Cruise 07 to determine physical oceanographic parameters of the water column, and in some cases used to help guide sample collection as part of the Deepwater Horizon oil spill sampling effort. Temperature, conductivity/salinity, depth, dissolved oxygen, and fluorometry data were collected onboard the M/V Sarah Bordelon, Cruise 07. The final product is a series of NetCDF files containing every CTD cast that has been processed and quality checked.

Chemical, physical and profile oceanographic data were collected aboard the F. G. Walton Smith in the Gulf of Mexico from 2010-06-01 to 2010-06-06 in response to the Deepwater Horizon Oil Spill event on April 20, 2010, by the Subsurface Monitoring Unit (SMU), which consisted of multiple government and corporate agencies. These data include CDOM fluorescence, conductivity, dissolved oxygen, hydrostatic pressure, salinity, sound velocity, temperature and water density. The instruments used to collect these data included CTD, fluorometer and oxygen meter along with other physical sampling devices. More specific information about each dataset is located in their individual metadata records. The CTD data underwent preliminary quality assurance and control procedures at the National Coastal Data Development Center (NCDDC). This dataset also contains products created for use in real time analysis and decision support. These products may include charts, graphs, maps, plots, and GIS formatted data files. Cruise level information consisting of data management documents, cruise reports and plans, videos and pictures, and other miscellaneous documentation were gathered by the data managers.

Physical and profile oceanographic data were collected aboard the Brooks McCall in the Gulf of Mexico from 2010-08-29 to 2010-09-02 in response to the Deepwater Horizon Oil Spill event on April 20, 2010, by the Subsurface Monitoring Unit (SMU), which consisted of multiple government and corporate agencies. These data include temperature. The instruments used to collect these data included CTD along with other physical sampling devices. More specific information about each dataset is located in their individual metadata records. The CTD data underwent preliminary quality assurance and control procedures at the National Coastal Data Development Center (NCDDC). Cruise level information consisting of data management documents, cruise reports and plans, videos and pictures, and other miscellaneous documentation were gathered by the data managers.

Imagery, laboratory analysis and sediment analysis oceanographic data were collected aboard the GYRE in the Gulf of Mexico from 2010-09-13 to 2010-09-16 in response to the Deepwater Horizon Oil Spill event on April 20, 2010, by the Subsurface Monitoring Unit (SMU), which consisted of multiple government and corporate agencies. These data include sediment properties. The instruments used to collect these data included sediment sampler - corer along with other physical sampling devices. More specific information about each dataset is located in their individual metadata records. Sediment cores were analyzed for physical characteristics, and recorded in photos and data files. Cruise level information consisting of data management documents, cruise reports and plans, videos and pictures, and other miscellaneous documentation were gathered by the data managers.