The proposed study aims to characterize mid-water water column habitats to gather baseline information necessary for evaluating the ecological impacts of deepwater energy and mineral development in the Pacific Outer Continental Shelf (OCS). By employing a blend of sampling and imaging techniques during NOAA and USGS-led research cruises, the project will focus on regions potentially affected by offshore wind and mineral extraction, particularly in the California Current Ecosystem and U.S. Pacific Island Territories. The study seeks to develop species inventories, understand the physical and chemical drivers of pelagic community structures, and provide recommendations for integrating a mid-water sampling component into future cruises. It outlines a detailed methodology involving traditional and contemporary oceanographic techniques, data analysis, and dissemination of findings. With an allocation of $820,000 to cover operational costs over two years, the outcomes will be classified to enhance environmental understanding and inform risk assessments related to offshore developments. This initiative underscores the need for accurate ecological baseline data, addressing critical knowledge gaps in oceanic habitats that might be affected by emerging industries in deeper waters, thus supporting sustainable marine resource management and conservation.