Gullmarn, also known as Gullmarsfjorden or Gullmaren, is a threshold fjord in the middle of Bohuslän Archipelago on the west coast of Sweden. It is the largest of the Bohuslän fjords with a length of 25 km (16 mi) and a width ranging from 1–3 km (0.62–1.86 mi). At its mouth, the depth is 45 m (148 ft), plunging to 125 m (410 ft) at its greatest depth near Alsbäck. The name "Gullmarn" means "God's sea" and comes from Old Norse. At its northern end the fjord branches into the Färlev and Saltkälle fjords.
Central Gullmarn with Stora Bornö as seen from Barkedal
|Location||Västra Götaland County, Sweden|
|Primary inflows||Saltkälle fjord, Fjärrlev fjord|
|Average depth||45 m (148 ft)|
|Max. depth||125 m (410 ft)|
|Frozen||shallow parts Jan-Feb|
The fjord was designated as Sweden's first marine conservation area in 1983. The nature reserve covers 16,499 ha (164.99 km2) and parts of several municipalities. Because of the varying depths of the fjord the marine wildlife is abundant and diverse. There are many unique marine animals that are not found in the more shallow areas of the fjord. The shallow waters also provide habitat for a broad range of bird species. Three scientific research stations have been established in the conservation area.
- "Gullmarn" (in Swedish). Gothenburg, Sweden: Länsstyrelsen Västra Götalands län. Retrieved 8 January 2016.
- "Gullmarn" (in Swedish). Uddevalla, Sweden: Uddevalla Natur- och kulturguide. 29 April 2015. Archived from the original on 28 January 2016. Retrieved 8 January 2016.
- Hellquist, Elof (1922). "Svensk etymologisk ordbok" (in Swedish). p. 210. Retrieved 8 January 2016.
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