Bothnian Bay Research Station

The Bothnian Bay research station is in Ii's Ulkokrunni island. The station started operating  1962 on the premises of the former pilot station under the name Krunnis Biological Station. In 1970, University of Oulu acquired also the premises of the former pilot station in Marjaniemi, Hailuoto.

University gave up Hailuoto's accommodation facilities in 2007 and finally shut down the office 2009.

The Bothnian Bay research station is part of the Finnish network of biological research stations:




The Bothnian Bay Research Station uses only samplers certified according to the ISO 17024 standard.

The Bothnian bay research station is part of the Fin LTSER network of long-term ecological and socio-ecological research.

The station's personnel are responsible for a significant part of the acquisition of monitoring data from the Bothnian Bay.

Timing and procurement of the sample series, are collaborated closely with the research station network and the Marine Research Division of the Finnish Meteorological Institute.

Assistance in research

Field station conducts the research which aims to secure the existence of a highly endangered sea spawning grayling (Thymallus thymallus).

The field station will also serves as a base for the Coastal-Life project, as well as for researchers following the success of transplanted extremely endangered plants in the Escape Life project.


The area around the Ulkokrunni's field station is dominated by the east-west ridge, to the south there is a large grove area.

The island itself is only about 600 years old.

The area of the island is about 200 ha. The dimensions in the north-south direction are about 2 km and in the west-east direction about 1.5 km.

Picture by Suvi Saarnio
Picture by Suvi Saarnio