Funding for this research was provided by:
Alaska SeaLife Center
Durham University Doctoral Scholarship
Received: 17 May 2019
Accepted: 17 September 2019
First Online: 4 October 2019
Ethics approval and consent to participate
: No original animal work was conducted for this effort. However, marine mammals are specially protected in most jurisdictions under a variety of national and international regulations, and all work on pinnipeds referenced here required prior approval by various regulatory bodies and by institutional ethics review boards.
: Not applicable.
: The authors declare that they have no competing interests.