・Amur River(2005, 2007, 2009)
・Lakes in China(2010)
・Lakes in Hokkaido
Several lakes(2008)
Lakes in Niseko mountain chain(2013)
Lake Toyoni(2009)
Lake Akkeshi(2013)
・Rivers in Hokkaido Island (2005〜2010)
・Minamihama wetland in Rishiri Island(2013)
・Northwestern Pacific(2014)
・Lakes in Canada(2014)
・Wetland in Borneo (2015)