Minsmere-Walberswick Heaths and Marshes are a Special Area of Conservation and Site of Special Scientific Interest in the English county of Suffolk. The site is located on the North Sea coast between Southwold and Sizewell, extending over an area of coastline around 7 miles (11 km) in length. The site is also designated as a Special Protection Area, part of the Minsmere-Walberswick European Marine Site and contains areas designated as Ramsar sites and Natura 2000 sites. It lies within the Suffolk Coast and Heaths Area of Outstanding Natural Beauty and is made up of a "complex mosaic" of marshes, reed beds, shingle banks and lowland heath habitats.