About the Authors

Kevin A. Glover

Kevin.glover@imr.no

Affiliation Institute of Marine Research, Bergen, Norway

Naohisa Kanda

Affiliation Institute of Cetacean Research, Tokyo, Japan

Tore Haug

Affiliation Institute of Marine Research, Tromsø, Norway

Luis A. Pastene

Affiliation Institute of Cetacean Research, Tokyo, Japan

Nils Øien

Affiliation Institute of Marine Research, Bergen, Norway

Mutsuo Goto

Affiliation Institute of Cetacean Research, Tokyo, Japan

Bjørghild B. Seliussen

Affiliation Institute of Marine Research, Bergen, Norway

Hans J. Skaug

Affiliations Institute of Marine Research, Bergen, Norway, Department of Mathematics, University of Bergen, Bergen, Norway

Competing Interests

The authors declare that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KAG NK TH LAP NØ MG BBS HJS. Performed the experiments: KAG BBS NK LAP. Analyzed the data: KAG BBS HJS LAP NK. Contributed reagents/materials/analysis tools: KAG BBS LP NK NÃ∼ TH. Wrote the paper: KAG NK TH LAP NØ MG BBS HJS.