Monitoring of the Baltic Sea harbour porpoise

NameStatic acoustic monitoring of the Baltic Sea harbour porpoise

LIFE+ Nature

Federal Agency for Nature Conservation

Swedish Environmental Protection Agency

Kolmården Wildlife Park

National Fund for Environmental Protection and Water

Finnish Ministry of the Environment

WWF Finland

Voivodship Fund for Environment al Protection and Water

Särkenniemi Oy

DurationJanuary 2010 to September 2015
Cooperation partners

Kolmårdens Djurpark

Swedish Agency for Marine and Water Management

Turku University of Applied Sciences

Ministry of Environment

Särkänniemi Adventure Park

University of Gdansk

Institute of Meteorology and Water Management

​Chief Inspectorate for Environmental Protection

Department of Bioscience, Aarhus University

Danish Forest and Nature Agency

Project managementKolmårdens Djurpark
Project management GOMDr. Harald Benke
Project staff


Latvian Institute of Aquatic Ecology

Coastal Research and Planning Institute

AquaBiota Water Research              

RUWPA - Research Unit for Wildlife Population Assessment

CREEM - Centre for  Research into Ecological and Environmental Modelling


Project staff GOM

Jens Koblitz,

Katharina Brundiers

Martin Jabbusch

Sophie Hansen

Karin T. Clausen

Anja Gallus

The aim of SAMBAH was the protection of the Baltic Sea harbour porpoise. In order to protect this population, it had to ascertain where the harbour porpoises occure seasonal in the inner Baltic Sea and whether we can distinguish them from the Beltsee population. By the help of nearly every country bordering the Baltic Sea and an intensive cooperation with COSAMM , for the first time echolocation signals of two years recording were analysed, abundances were definite and seasonal migration patterns were detected. At 304 measuring stations in the whole Baltic Sea were moored C-PODs (detectors for harbour porpoise noises) in 5 to 80 meters water depth. The data are used to create maps which show the distribution of the harbour porpoise population. There is a distinct separation between both populations (central Baltic Sea and western Baltic Sea) between May and December. This time comprise the breeding season, the birth season and a part of the lactation period.

The analysis of the collected click-sounds between May 2011 and May 2013 resulted the new discovery of a harbour porpoise’s reproduction area south of the Swedish island Gotland.