The Limfjord (Danish: Limfjorden [ˈliːmˌfjoːˀɐn]) is a shallow sound in Denmark that separates the island of Vendsyssel-Thy from the rest of the Jutland Peninsula. It extends from Thyborøn Channel on the North Sea to Hals on the Kattegat. It is approximately 180 kilometres long and of an irregular shape with several bays, narrowings, and islands, most notably Mors. It is deepest at Hvalpsund (24 metres). Its main port is Aalborg,[1] where a railway and a road bridge are built across Limfjorden to Nørresundby, while motorway E45 passes it through a tunnel to the east.
Limfjorden was originally connected with the North Sea. Canute the Great sailed into it in 1027 on his way back from England. According to Saxo Grammaticus it closed at some time around 1200. On February 3, 1825 a flood pierced an opening, the so-called Agger Channel, in the north of the 13 km long and less than 1 km wide isthmus, the Agger Tange, which had until then linked Vendsyssel-Thy with the rest of Jutland. In 1862, another flood pierced another opening, the Thyborøn Channel, through the remainder of Agger Tange (see satellite image). Agger Channel was continuously filling with sand, and was eventually closed in 1877.
Limfjorden is notable for its tasty mussels (Mytilus edulis) [1]. Gourmets appreciate its oysters which are considered to be of extraordinary size and quality.