The Limfjord (common Danish: Limfjorden [ˈliːmˌfjoˀɐn], in northwest Jutlandish dialect: Æ Limfjord) is a shallow part of the sea, located in Denmark where it has been regarded as an inlet ever since Viking times. However, it now has entries both from the North Sea and Kattegat, and hence separates the North Jutlandic Island (Danish: Nørrejyske Ø, which includes the old provinces of Vendsyssel, Han herred and Thy) from the rest of the Jutland Peninsula. The Limfjord extends from Thyborøn Channel on the North Sea to Hals on the Kattegat.
https://en.wikipedia.org/wiki/Limfjord