About the Authors

Karyn D. Rode

krode@usgs.gov

Affiliation U.S. Geological Survey, Alaska Science Center, 4210 University Drive, Anchorage, Alaska, 99508, United States of America

Ryan R. Wilson

Affiliation United States Fish and Wildlife Service, Marine Mammals Management, 1011 E Tudor Road, Anchorage, Alaska, 99503, United States of America

Eric V. Regehr

Affiliation United States Fish and Wildlife Service, Marine Mammals Management, 1011 E Tudor Road, Anchorage, Alaska, 99503, United States of America

Michelle St. Martin

Affiliation United States Fish and Wildlife Service, Marine Mammals Management, 1011 E Tudor Road, Anchorage, Alaska, 99503, United States of America

David C. Douglas

Affiliation U.S. Geological Survey, Alaska Science Center, 250 Egan Drive, Juneau, Alaska, 99801, United States of America

Jay Olson

Affiliation Brigham Young University, Plant and Wildlife Sciences, 5049 LSB, Provo, Utah, 84602, United States of America

Competing Interests

Teck Alaska Inc provided in-kind support for the study including use of their facilities as a base for field operations. This in-kind support does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: KDR EVR RRW MSM. Performed the experiments: KDR RRW MSM EVR. Analyzed the data: KDR RRW MSM JO DCD. Wrote the paper: KDR RRW DCD EVR.