The Australian first Regional Coupled Model is used to assess the importance of resolving high-resolution air-sea interactions at the mesoscale 0(100 km) to better understand coupled processes under the present climate and to forecast future climate. The impact of the ocean current feedback to the wind stress is found to be substantial all around Australia and provides a sink of eddy kinetic energy in the ocean through an eddy-killing effect, while releasing energy to the surface atmospheric winds. The transport of the East Australian Current is substantially reduced manly due to of the current feedback. The influence of the current feedback on low-pressure systems, such as East Coast Lows, is also investigated and differences are shown to be non negligible with the current feedback increasing intense wind events. Releasing the thermal feedback as well as the current feedback in the coupling also proved insights to understand the added effects of coupled simulations. Finally, dynamical downscaling using ocean-only or atmosphere-only models could thus lack the air-sea feedback and underestimate winds in the atmosphere or currents in the ocean.