MOESM4 of BMC Ecology Image Competition 2016: the winning images

Additional file 4. “This was taken during my most recent field season studying the killer whales (Orcinus orca) at Bremer Canyon, Western [Australia] for my PhD. We were with a group of approximately 7 individuals taking fin shots, when all of a sudden the group had a change of direction and picked up their speed. They were on the hunt! We observed them charging and porpoising through the water at high speed chasing down their next meal. What ensued was a successful predation on another cetacean. Seeing them in all their might and glory and speed, you certainly gain respect for this King of the Ocean.” Attribution: Rebecca Wellard (Curtin University, Western Australia).