Guidelines to whale photo-identification from fishing boats derived from experience in Kerguelen (ASD 58.5.1) and Crozet (ASD 58.6)

Scientific observers on board vessels fishing in Kerguelen and Crozet EEZ have contributed to a whale photo-identification program for several years. This paper describes the gear used, camera settings, data checking at sea and the information needed to identify individuals and interactions, based on this experience. These guidelines have been assembled to help members wishing to start a photo-identification program. This document could be part of the resources provided by CCAMLR on its website.