Abstract: Regional-scale synthesis depends on persistent, comparable, multi-modal environmental observations. Long-duration Gulf-wide acoustic datasets, initiated under NSF and GOMRI and expanded through the NRDA Restoration and NOAA RESTORE Science programs, are one of the only in situ data streams that scale across time, ecosystems, and national boundaries. The LISTEN program, the Deep-Sea Benefits Project, and related efforts now provide a synthesis-ready acoustic backbone that captures marine species occurrence, ecosystem variability, weather signatures, and anthropogenic noise across the basin.

Acoustic observations are translated into standardized metrics that account for regional and sensor differences, ensuring comparability across platforms and years. These metrics are then integrated with complementary datasets including remotely sensed surface conditions, 4D ocean circulation models, AIS vessel traffic, historical seismic activity, and glider-based acoustic and imaging systems. Multi-sensor deployments link biological aggregations and net catches of potential prey fields, deep oceanographic features, and local acoustic events at high spatial and temporal resolutions. Binational collaborations with Mexican partners further contextualize seasonal patterns, industrial activity, and regional management priorities.

Early synthesis outcomes are emerging from these integrations. Gulf-wide acoustic indicators now allow visualization of species distributions alongside offshore industrial activity and transportation patterns. Coupling full-depth ocean models with biodiversity metrics reveals how deep ocean dynamics shape biological presence. Vessel-associated noise patterns can be examined in relation to vessel efficiency and operational behaviors. Long-range propagation of airgun signals provides insight into the composition and structure of the deepest Gulf basins. These examples demonstrate how combining large-scale observing frameworks with collaboratively defined questions can produce decision-relevant, cross-disciplinary insights. By simultaneously capturing biological activity, physical processes, and human activities, including stressors and threats, acoustic observations offer an integrated lens for understanding Gulf ecosystem change and a practical foundation for working with industry and government entities toward common goals.