About the Authors

Clive R. McMahon

clive.mcmahon@utas.edu.au

Affiliation Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia

Hamish Howe

Affiliation Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia

John van den Hoff

Affiliation Australian Antarctic Division, Channel Highway, Kingston, Tasmania, Australia

Rachael Alderman

Affiliation Threatened Species & Marine Section, Department of Primary Industries, Water and the Environment, Hobart, Tasmania, Australia

Henk Brolsma

Affiliation Australian Antarctic Division, Channel Highway, Kingston, Tasmania, Australia

Mark A. Hindell

Affiliation Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CRM JvdH MAH. Performed the experiments: CRM HH JvdH HB MAH. Analyzed the data: CRM HH JvdH HB MAH. Contributed reagents/materials/analysis tools: JvdH RA CRM HB MAH. Wrote the paper: CRM HH JvdH RA HB MAH. Naive observer: HH. Gave informed consent to participate in the study verbally, this was not documented in writing: HH. Supervised HH's study: JvdH MAH.