work Spice and Acoustics active How submesoscale features affect sound propagation across the spicy ocean Eddies and the Transition Layer in Hawaiʻi planning How mesoscale and submesoscale interactions structure the ocean between the mixed layer and the interior Isopycnal Variability in Spicy Regions analysis Understanding along-isopycnal temperature–salinity variability and its role in isopycnal mixing across the global ocean fun