A gentoo penguin flees for its life as a leopard seal bursts out of the water. Eduardo was expecting it. He had noticed the penguin resting on a fragment of broken ice and watched the seal swim back and forth. ‘Moments later, the seal flew out of the water, mouth open,’ he says.

Leopard seals are formidable predators. Their slender bodies are built for speed and their wide jaws bear long canine teeth. They hunt almost anything, changing their diet in response to availability and the time of year. Penguins are a regular meal but they also enjoy krill, fish, squid and the pups of other seal species.