The Kungsbacka Fjord is a fjord

Fjärås kyrkby

Fjärås kyrkby is a locality situated in Kungsbacka Municipality, Halland County, Sweden, with 2,213 inhabitants in 2005. It is located at the shore of lake Lygnern.- References :...

 and a nature reserve

Nature reserve

A nature reserve is a protected area of importance for wildlife, flora, fauna or features of geological or other special interest, which is reserved and managed for conservation and to provide special opportunities for study or research...

 in Halland County

Halland County

Halland County is a county on the western coast of Sweden. It corresponds roughly to the cultural and historical province of Halland. The capital is Halmstad....

, western Sweden

Sweden

Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

. The fjord is about 10 km long. It is delimited to the west by the Onsala Peninsula

Onsala

Onsala is a locality situated in Kungsbacka Municipality, Halland County, Sweden, with 11,375 inhabitants in 2005. It is also the biggest peninsula in Sweden, south of Gothenburg....

 and to the east by the parish of Fjärås

Fjärås kyrkby

Fjärås kyrkby is a locality situated in Kungsbacka Municipality, Halland County, Sweden, with 2,213 inhabitants in 2005. It is located at the shore of lake Lygnern.- References :...

. The rivers Rolfsån

Rolfsån

Rolfsån is a river in Sweden, the main outflow of lake Lygnern. It empties out into the Kungsbacka Fjord.-References:...

 and Kungsbackaån

Kungsbackaån

Kungsbackaån is a river in Sweden....

 empty out into the fjord, which in turn opens to the Kattegat

Kattegat

The Kattegat , or Kattegatt is a sea area bounded by the Jutland peninsula and the Straits islands of Denmark on the west and south, and the provinces of Västergötland, Scania, Halland and Bohuslän in Sweden on the east. The Baltic Sea drains into the Kattegat through the Øresund and the Danish...

.

The Kungsbacka Fjord Nature Reserve (Swedish: Kungsbackafjordens naturreservat), established in 2005, has an area of 5200 hectares and is included in the Natura 2000

Natura 2000

Natura 2000 is an ecological network of protected areas in the territory of the European Union.-Origins:In May 1992, the governments of the European Communities adopted legislation designed to protect the most seriously threatened habitats and species across Europe. This legislation is called the...

 network. More than 240 bird species have been noted, including the common redshank

Common Redshank

The Common Redshank or simply Redshank is an Eurasian wader in the large family Scolopacidae.- Description and systematics :...

, the yellow wagtail, the tufted duck

Tufted Duck

The Tufted Duck, Aythya fuligula, is a medium-sized diving duck with a population of close to one million birds.- Description :The adult male is all black except for white flanks and a blue-grey bill. It has an obvious head tuft that gives the species its name.The adult female is brown with paler...

 and the rare smew

Smew

The Smew is a small duck, which is somewhat intermediate between the typical mergansers and the goldeneyes . It is the only member of the genus Mergellus; sometimes included in Mergus, this genus is distinct and might actually be a bit closer to the goldeneyes...

.