Estimating the stock size of harbor seals (Phoca vitulina richardii) in the inland waters of Washington State using line-transect methods

• Thomas A. Jefferson ,

  Contributed equally to this work with: Thomas A. Jefferson, Mari A. Smultea

  Roles Formal analysis, Investigation, Methodology, Writing – original draft

  * E-mail: sclymene@aol.com

  Affiliation Clymene Enterprises, Lakeside, CA, United States of America

  https://orcid.org/0000-0001-6817-2747

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• Mari A. Smultea ,

  Contributed equally to this work with: Thomas A. Jefferson, Mari A. Smultea

  Roles Funding acquisition, Project administration, Writing – original draft

  Affiliation Smultea Environmental Sciences, Preston, WA, United States of America

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• Eric J. Ward ,

  Roles Formal analysis, Methodology, Writing – review & editing

  ¶‡ These authors also contributed equally to this work.

  Affiliation Conservation Biology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanographic and Atmospheric Administration, Seattle, WA, United States of America

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• Barry Berejikian

  Roles Investigation, Writing – review & editing

  ¶‡ These authors also contributed equally to this work.

  Affiliation Environmental and Fisheries Sciences Division, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanographic and Atmospheric Administration, Port Orchard, WA, United States of America

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