The video captures the moment when a male grey seal went rogue. It appears to be sunbathing near a group of pups, then it looks up and sidles over to one of the hapless pups. It then catches, drowns and eats it.
Over the following week in 2014, Amy Bishop from Durham University, UK, and her colleagues saw the same male cannibalise five more pups from the breeding colony on the Isle of May in Scotland.
Additional carcasses found in the vicinity suggested 11 pups had been killed in this manner in one week, they now report.
The full article can be viewed here.