Stock Photo - Adult female leopard seal Hydrurga leptonyx stalking, then killing and eating an adult gentoo penguin in Paradise Bay, Antarctica, Southern Ocean MORE INFO Although primarily a krill eater, this female leopard seal has perfected the technique of ambushing gentoo penguins returning to their nesting colony in Paradise Bay In order to avoid eating penguin feathers she literally flings the dead penguin out of its own skin by violently thrashing the penguin side_to_side In 2003, a leopard seal dragged a snorkeling biologist underwater to her death in what was identified as the first known human fatality from a leopard seal However, numerous examples of aggressive behavior, stalking, and attacks on humans had been previously documented