The Dollart (Dutch: Dollard) is a bay in the Wadden Sea between northern Netherlands and Germany, on the west side of the estuary of the Ems river. Most of it dries at low tide. Many water birds feed there. ... Found on http://en.wikipedia.org/wiki/Dollart
1) Disputed water 
The Dollart (Dutch: Dollard) is a bay in the Wadden Sea between northern Netherlands and Germany, on the west side of the estuary of the Ems river. Most of it dries at low tide. Many water birds feed there. ...