The IBA is a 43-km long and 3-4-km wide tidal fjord with fringing saltmarsh and sand-dunes (135 km of coastline in all). Human settlements, industrial plants and harbours are being developed along the shore and tourist boat traffic is increasing.
The site regularly holds more than 20,000 wintering waterbirds.
BirdLife International (2020) Important Bird Areas factsheet: Schlei. Downloaded from http://www.birdlife.org on 06/08/2020.