July 2005 Łacha Lake, Józefów, Poland

June 2005 Krutyń river, Ruciane-Nida, Poland

June 2005 Krutyń river, Ruciane-Nida, Poland

June 2005 Krutyń river, Ruciane-Nida, Poland

June 2005 Krutyń river, Ruciane-Nida, Poland

June 2005 Krutyń river, Ruciane-Nida, Poland

July 2012 Bachotek and other lakes, Brodnica, Poland

July 2012 Bachotek and other lakes, Brodnica, Poland

July 2012 Bachotek and other lakes, Brodnica, Poland

July 2012 Bachotek and other lakes, Brodnica, Poland

July 2012 Bachotek and other lakes, Brodnica, Poland

July 2012 Bachotek and other lakes, Brodnica, Poland

January 2014 Wysokie Brodno Lake, Brodnica, Poland

January 2014 Wysokie Brodno Lake, Brodnica, Poland

January 2014 Wysokie Brodno Lake, Brodnica, Poland