About the Authors

Nora Hanson

nnh@st-andrews.ac.uk

Affiliation Sea Mammal Research Unit, Scottish Oceans Institute, University of St Andrews, Fife, United Kingdom

Dave Thompson

Affiliation Sea Mammal Research Unit, Scottish Oceans Institute, University of St Andrews, Fife, United Kingdom

Callan Duck

Affiliation Sea Mammal Research Unit, Scottish Oceans Institute, University of St Andrews, Fife, United Kingdom

Simon Moss

Affiliation Sea Mammal Research Unit, Scottish Oceans Institute, University of St Andrews, Fife, United Kingdom

Mike Lonergan

Affiliation Sea Mammal Research Unit, Scottish Oceans Institute, University of St Andrews, Fife, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DT CD SM ML. Performed the experiments: DT CD SM. Analyzed the data: NH ML DT. Contributed reagents/materials/analysis tools: NH ML DT CD SM. Wrote the paper: NH ML DT CD SM.