Continent

•  Afrika (5)
•  Europe (19)

Land

•  Atlantic Islands (3)
•  Benelux (5)
•  Carib/Bahamas/Cuba (5)
•  Danube (7)
•  Poland, Baltic states (4)
•  UK / Ver. Kon. (3)

Seas

•  Baltic Sea (10)
•  Irish Sea (2)
•  Mediterranean Sea (11)
•  North Sea (8)

Province

•  Drenthe (1)
•  Flevoland (1)
•  Friesland (1)
•  Gelderland (1)
•  Groningen (2)
•  Limburg (1)
•  Noord-Brabant (1)
•  Noord-Holland (2)
•  Overijssel (1)
•  Utrecht (1)
•  Zeeland (1)
•  Zuid-Holland (1)