- 2021/10 - 現在 Kyoto University Wildlife Research Center Professor
- 2013/11 - 2021/10 Hokkaido University Field Science Center for Northern Biosphere
- 2008/11 - 2013/10 Hokkaido University Field Science Center for Northern Biosphere
- 2008/04 - 2008/11 National Institute of Polar Research
- 2008/04 - 2008/09 Atomi University
- 2006/04 - 2008/03 Tokyo Institute of Technology
- 2006 - 2008 Postdoctoral Fellowships of Japan Society for the Promotion of Science,Tokyo Institute of Technology
- 2008 - Postdoctoral Fellowships of Japan Society for the Promotion of Science,National Institute of Polar Research
- 2008 - lecturer,Atomi University
- 2004/07 - 2006/03 Texas A&M University 日本学術振興会海外特別研究員
- 2004 - 2006 Postdoctoral Fellowships of Japan Society for the Promotion of Science,Texas A&M University
- 2003 - 2004 National Institute of Polar Research
- 2003 - 2004 Part-time researcher for university or other academic organization,National Institute of Polar Research
- 2002 - 2004 東京コミュニケーションアート専門学校 非常勤講師
- 2002 - 2004 Part-time lecturer,Tokyo Communication Arts
- 2004 - 東京大学海洋研究所・付属海洋科学国際共同研究センター 大学等非常勤研究員
- 2004 - Part-time researcher for university or other academic organization,Ocean Research Institute, The University of Tokyo
- 2002 - National Institute of Polar Research
- 2002 - Research Assistant,National Institute of Polar Research
- 2001 - National Institute of Polar Research
- 2001 - Research Assistant,National Institute of Polar Research
- 2000 - National Institute of Polar Research
- 2000 - Research Assistant,National Institute of Polar Research
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The Ecological Society of Japan
, Cetology Study Group of Japan
, 日本バイオロギング研究会
, 勇魚会
, 日本哺乳類学会
, 水産学会
, 動物行動学会
, Society of Marine Mammalogy