Aerial surveys of Grey Seals in the Wadden Sea in the season of 2012-2013

In the German and Dutch Wadden Sea, several aerial and boat counts are conducted during the pupping season (November-January), whilst on the island of Helgoland (Germany) surveys are carried out from land. Furthermore, two dedicated grey seal aerial surveys are carried out during the moult (March-April). Because grey seals have not been seen to breed in the Danish Wadden Sea and show a rather seasonal occurrence, grey seals are only counted during the summer counts for harbour seals in Denmark.

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