The Site consists of approximately a quarter of Lovund Island and the much smaller Alkøya Island, and adjacent shallow marine waters, rocky shores and marine subtidal aquatic beds. Lundeura is a scree mountain with unique large boulders close to seabird feeding grounds; its steepness provides the protection they need to nest. The Site is internationally important for seabird populations across the North Atlantic Ocean, such as the vulnerable Atlantic puffin (Fratercula arctica) and the black-legged kittiwake (Rissa tridactyla). The common tern (Sterna hirundo), eagle owl (Bubo bubo) and the black guillemot (Cepphus grylle) breed here. The European otter (Lutra lutra) is occasionally observed. The nesting cliffs are important in the nutrient flow between ocean and land: the birds foraging in the ocean spread guano across the cliffs and surrounding area, which provides nutrient-rich growing conditions for the diverse vegetation of the island. The lower-lying areas are used for sheep grazing. The Site is used for tourism, especially when puffins arrive in the spring.