Offshore winds play a crucial role in shaping coastal dunes at Magilligan Point, Northern Ireland. By studying wind flow patterns and sediment transport, researchers found that these winds help rebuild dunes after storms by carrying sand from the beach onto the dunes. The study used advanced technology like 3-D sonic anemometers and computational fluid dynamics to analyze how wind affects dune formation. The findings suggest that offshore winds are key in maintaining and shaping dunes on leeside coasts, where the dominant wind direction is offshore.