About the Authors

Stella Villegas-Amtmann

stella.villegas@gmail.com

Affiliation Department of Ecology and Evolutionary Biology, University of California Santa Cruz, Santa Cruz, California, United States of America

Samantha E. Simmons

Current address: Marine Mammal Commission, Bethesda, Maryland, United States of America

Affiliation Department of Ecology and Evolutionary Biology, University of California Santa Cruz, Santa Cruz, California, United States of America

Carey E. Kuhn

Current address: National Marine Mammal Laboratory, Alaska Fisheries Science Center/National Marine Fisheries Service/National Oceanic and Atmospheric Administration, Seattle, Washington, United States of America

Affiliation Department of Ecology and Evolutionary Biology, University of California Santa Cruz, Santa Cruz, California, United States of America

Luis A. Huckstadt

Affiliation Department of Ocean Sciences, University of California Santa Cruz, Santa Cruz, California, United States of America

Daniel P. Costa

Affiliation Department of Ecology and Evolutionary Biology, University of California Santa Cruz, Santa Cruz, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SV-A. Analyzed the data: SV-A LAH. Contributed reagents/materials/analysis tools: DPC. Wrote the paper: SV-A. Participated in the field work and data collection: SV-A SES CEK LAH DPC.