The Site is composed of two shallow bays within the larger Bråviken bay on the Baltic coast, each holding a handful of islands, and the bordering reed-belts, coastal and steppe meadows, and coniferous and oak forests. The Site is an important breeding and staging area for over 230 bird species, and regularly supports over 20,000 waterbirds including large populations of greylag goose Anser anser, bean goose Anser fabalis and tufted duck Aythya fuligula. It also supports over 1% of the biogeographic population of the smew Mergellus albellus and the globally vulnerable lesser white-fronted goose Anser erythropus. The bays provide an important spawning, nursery and feeding area for fish, and the Site is classified as nationally important for commercial fishing for the Atlantic herring Clupea harengus, the zander Stizostedion lucioperca, the northern pike Esox lucius and the brown trout Salmo trutta. Human activities include recreation, forestry, grazing for livestock and fishing. A few ancient monuments are found within the Site. A restoration plan is being implemented to restore the meadows and pastures and reduce the threat to biodiversity caused by overgrowth and shadowing of light-dependent species.