Foundlings were provided by the North Pacific University Marine Mammal Research Consortium by the North Pacific Marine Science Foundation. CS was founded by travel grants from SEB. Special thanks to Dr Andreas Fahlman and Dr Jordi Altimiras for great supervision and Dr Andrew Trites for giving me the fantastic opportunity to do my MSc at the Marine Mammal Research Unit (MMRU). Great thanks also for the assistance from the trainers and technical and administrative staff at the Open Water Research Station and the Vancouver Aquarium Marine Sciences Centre.