Funding for this research was provided by:
Museum of Comparative Zoology, Harvard University
Center for the Environment, Harvard University
Faculty of Arts and Sciences, Harvard University
Directorate for Biological Sciences (1402447)
Marine Conservation Action Fund
Received: 16 June 2017
Accepted: 11 October 2017
First Online: 2 November 2017
Compliance with ethical standards
: The authors declare that they have no competing interests.
: All local, national, and international regulations and conventions, as well as normal scientific ethical practices, have been respected.