Funding for this research was provided by:
Scottish Natural Heritage
SeaWorld and Busch Gardens Conservation Fund
Received: 7 April 2020
Accepted: 4 August 2020
First Online: 17 August 2020
Ethics approval and consent to participate
: All work was carried out in accordance with the UK HM Government Home Office under the Animals (Scientific Procedures) Act 1986 (Licence P23C6EFD2) and under the Wildlife & Countryside Act 1981 (as amended) (Licence: 124812) and reviewed by the University of Exeter’s Animal Welfare and Ethical Review board (AWERB).
: Not applicable.
: The authors declare no competing interests.