‘Blue’ coasts: Unravelling the perceived restorativeness of coastal environments and the influence of their components

•Beaches, salt marshes and dunes restore 30% more than towns, dikes, and harbors.•Beach amenities reduce the amount of psychological restoration by up to 20%•Positive dose-effects of vegetation, sand, and sky, negative of urban structures.•Towards improving sustainable spatial design, nature-based therapies, and tourism.