About the Authors

María José Pérez-Alvarez

mjose.perez@eutropia.cl

Affiliations Instituto de Ecología y Biodiversidad (IEB), Facultad de Ciencias, Universidad de Chile, Ñuñoa, Santiago, Chile, Centro de Investigación Eutropia, Santiago, Chile

Carlos Olavarría

Affiliations Centro de Investigación Eutropia, Santiago, Chile, Fundación CEQUA, Punta Arenas, Chile

Rodrigo Moraga

Affiliation Centro de Investigación Eutropia, Santiago, Chile

C. Scott Baker

Affiliation Marine Mammal Institute and Department of Fisheries and Wildlife, Oregon State University, Hatfield Marine Science Center, Newport, Oregon, United States of America

Rebecca M. Hamner

Affiliation Marine Mammal Institute and Department of Fisheries and Wildlife, Oregon State University, Hatfield Marine Science Center, Newport, Oregon, United States of America

Elie Poulin

Affiliation Instituto de Ecología y Biodiversidad (IEB), Facultad de Ciencias, Universidad de Chile, Ñuñoa, Santiago, Chile

Competing Interests

Logistic support granted by the "Expedición Fitz Roy" Tourist Company. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MJPA CO EP. Performed the experiments: MJPA RH EP. Analyzed the data: MJPA EP. Contributed reagents/materials/analysis tools: MJPA CSB EP. Wrote the paper: MJPA CO CSB RH EP. Acquisition of data: MJPA CO RM CSB RH EP. Contributed intellectually to the interpretation and discussion of results: MJPA CO CSB RH EP.