So it was a big surprise to discover wild leopard seals feeding alongside one another while eating king penguins at South Georgia, a remote island in the southern Atlantic Ocean. On top of this ...

Like their feline namesakes, leopard seals are fierce predators. They are the most formidable hunters of all the seals and the only ones that feed on warm-blooded prey, such as other seals.

Leopard seals had always been considered an Antarctic species, residing predominantly within the pack ice. Births were always thought to occur on the ice flows surrounding the continent.

This photo shot by remote-controlled aircraft saved scientists the time and cost of capturing, immobilizing and weighing wild leopard seals. A new study found the drone photos just as effective at ...