Natura 2000 area no. 28 comprises 33.165 ha and is therefore by far the largest nature area in the geopark. Agger Tange (spit), Aggerø Island and part of Skibsted Fjord, however, lie outside the limits of the geopark. Of the types of nature included by Natura 200 here it is the shallow fjords with extensive sandbanks, reefs and tidal areas in Nissum Bredning and tidal meadows on Thyholm and Jegindø island that are in focus. Bird protection area F39 that comprises Harboøre Tange, Plet Enge, Sønderholm Enge and lake Gjeller Sø has large areas of coastal lagoons and tidal meadows that are also significant. The presence of otters is part of the reason for the Natura 2000 nomination. They have been registered at Egebjerg Bæk, Hellerød Kær on the eastern side of Thyholm and in the Gudum River.