Image 1,4: Ocean Alliance

Image 2,3: Aerial images comparing the sizes of adult male Bigg’s and Resident killer whales, both taken in the Salish Sea off southern Vancouver Island. Images are scaled to lengths calculated during health research by SR3 SeaLife Response, Rehabilitation and Research. Images were collected by John Durban and Holly Fearnbach using a non-invasive drone authorized by research permit 19091 issued by the US National Marine Fisheries Service (NMFS). Adapted from Morin et al. 2024 Royal Society Open Science, 11(3), p.231368.​​