About the Authors

Denise Risch

denise.risch@noaa.gov

Affiliation Integrated Statistics, Woods Hole, Massachusetts, United States of America

Peter J. Corkeron

Affiliation Northeast Fisheries Science Center, Woods Hole, Massachusetts, United States of America

William T. Ellison

Affiliation Marine Acoustics, Inc., Middletown, Rhode Island, United States of America

Sofie M. Van Parijs

Affiliation Northeast Fisheries Science Center, Woods Hole, Massachusetts, United States of America

Competing Interests

DR and PJC are employed by Integrated Statistics Inc. The company employs contract biologists and other personnel working for the Northeast Fisheries Science Center in Woods Hole. Additionally, PJC is professionally related to the marine mammal research group at the New England Aquarium. WTE is the founder of Marine Acoustics Inc., an environmental consulting company. These professional affiliations do not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: DR PJC SMVP. Performed the experiments: DR. Analyzed the data: DR PJC. Contributed reagents/materials/analysis tools: DR PJC WTE. Wrote the paper: DR PJC WTE SMVP.