The Site encompasses the lower parts and mouth of the Fylleån river on the west coast; it is largely untouched by hydrological interventions and has good water quality. Interesting plant life is supported by old meanders, overgrowing oxbow lakes, and regularly flooded wetlands, as well as by the well-preserved sand dune landscape on the coast. The river is highly valued as it constitutes a spawning ground for the nationally red-listed Atlantic salmon Salmo salar and brown trout Salmo trutta. It also supports a diverse benthic fauna. A constructed wetland close to the sea provides a staging area for migratory birds and also an important breeding area for birds such as the nationally endangered Eurasian penduline tit Remiz pendulinus and the nationally vulnerable little tern Sternula albifrons. The coastal stone fields contain graves from the early Scandinavian Iron Age, and there are many archaeological and ancient cultural remains in the area. Due to its open landscape, scenic beauty and diverse nature, the area is highly valued for recreation and tourism. The main threats to the Site relate to logging and wood harvesting, fishing, river regulation and water management. Three minor hydropower stations are located within the Site; they all have fish ladders, but nonetheless they are barriers to fish and other organisms as well as sediment transport, and may affect the water flow.