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The diverse ocean-bottom habitats off the coast of South Carolina and Georgia support a corresponding diversity of organisms. An imaginary line, or transect, running from the coast of Georgia to the edge of the continental shelf off South Carolina would cross these habitats: coastal sands washed down from the land; emergent, hard-bottom, rocky outcrops on the continental shelf; the soft muddy sediments on the upper Florida-Hatteras Slope; and the complex bottom topography of the Charleston Bump on the Blake Plateau. Beyond the Blake Plateau lies the deep ocean, or the abyss. The waters overlying the transect change as well. They become increasingly less influenced by local climate and runoff from the land, and more influenced by tropical currents of the Gulf Stream, as you move offshore. Scientists on the Estuary to the Abyss Expedition will research the habitats and fauna along this line, which we refer to as the "Latitude 31-30 Transect." Sponsored by the NOAA Office of Exploration, the expedition team will work aboard Harbor Branch Oceanographic Institution's research vessel, the Seward Johnson, which carries and deploys the deep submersible vehicle, the Johnson-Sea-Link II. For nearly a half-century, fishery scientists and marine ecologists have conducted research and monitoring of many of the near-shore marine and estuarine habitats off the coast of the southeastern U.S. Historically, most of these research efforts have been aimed at waters inshore of the Florida-Hatteras Slope, where productive shelf waters support important fisheries for snappers, groupers, and other reef fishes. The deeper waters beyond the Florida-Hatteras Slope have been studied less. The Estuary to the Abyss cruise will concentrate on deeper waters (those greater than 400 m) along the transect. Our research will complement previous studies of shallow-water faunas. We will examine changes in faunas that occur with increasing depth and distance offshore. The exploration along this transect will also help us understand the influence of several variables -- including distance from land (and its human inhabitants), bottom type, and overlying water masses -- on the assemblages of organisms that dwell on the bottom. Overall, we will expand our knowledge of bottom faunas from the estuary to the deep sea.

This dataset contains oceanographic data (ADCP Lander, Chemical, CTD, ROV, SCS), biological images and videos, and documentation. This project involves a comprehensive multidisciplinary study to explore and characterize two deep coral habitats with contrasting benthic communities on the west Florida slope of the Gulf of Mexico, including the testing of newly developed sensors deployed on an ROV to map and fully resolve the carbonate system at the sites.

This dataset contains oceanographic data (ADCP, CTD, ROV, Jason, Lander, SCS, Vehicle, XBT), images, and documentation. The primary goals of this cruise were as follows: Exploration of new sites and new areas within known sites, sampling of corals and associated fauna for biodiversity and biogeography, community sampling at seep and coral habitats, sediment sampling at soft sediment sites for biogeochemistry and diversity, collections of corals for live coral experiments, water sampling for water chemistry and microbial diversity, sediment, water, and faunal samples for eDNA work, geological observations and sampling for geomorphology, and lander deployments.

This data collection contains geospatial data from models predicting the spatial distributions of deep-sea corals (DSCs) and hardbottom habitats offshore of the southeastern U.S. It includes a database (.csv text file) containing records of occurrence (presence-absence) for DSCs with associated measures of sampling effort and bottom type from 20 datasets comprised of data from visual field surveys conducted with underwater vehicles. It also includes raster datasets at 100 x 100 m spatial resolution depicting the median and coefficient variation of the predicted occurrence (occupancy probability) for 24 taxa of DSCs (23 genera, 1 family) and hardbottom habitats. Additional raster datasets depict the median and coefficient of variation of the predicted genus richness for the 23 genera of DSCs. The data collection also includes raster datasets at 100 x 100 m spatial resolution depicting each of the 62 spatial environmental predictors considered for fitting the models. For more information, see Poti et al. (2022). The project to compile this model took place between 2016 and 2021, however the model input data range from 2001-2018 and the model output covers the same timeframe.

This data set contains oceanographic data (CTD, Landers, Piston Cores) and event/sample logs. The project goal was to improve understanding of the planktonic and benthic communities (including corals) that reside in and around mid- and South-Atlantic canyon and cold seep habitats, including estimates of genetic connectivity among sites and trophic connectivity from the water column to benthic communities.