Harbour Porpoise Survey, Baltic Sea: May - August 2002
In May 2002, the Song of the Whale team began conducting visual and
acoustic surveys of harbour porpoise populations in the Baltic Sea.
Collecting reliable scientific data
on harbour porpoise distribution
and abundance is an essential step in
developing solutions to the
problem of "fisheries by-catch."
Tens of thousands of porpoises are unintentionally caught and killed in fishing nets each year. We need to understand more about their whereabouts and movements in order to establish criteria for improved protection.
Automatic porpoise detector equipment developed by IFAW -- which picks up the high-frequency sounds made by harbour porpoises and logs them on to a computer -- enables the Song of the Whale team to locate these elusive animals and identify important habitat areas.
Tens of thousands of porpoises are unintentionally caught and killed in fishing nets each year. We need to understand more about their whereabouts and movements in order to establish criteria for improved protection.
Automatic porpoise detector equipment developed by IFAW -- which picks up the high-frequency sounds made by harbour porpoises and logs them on to a computer -- enables the Song of the Whale team to locate these elusive animals and identify important habitat areas.
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This map shows the harbour porpoise-survey tracks (as of 25 July 2002) run by the Song of the Whale in the Baltic Sea. Image courtesy of Song of the Whale research team/IFAW.
