National Geographic's upcoming docuseries, 'Secrets of the Penguins,' captured a shocking encounter between a mother rockhopper penguin and giant, hungry sea lion, and PEOPLE has a first look at the f ...

Caught at the edge of the sea, a mother penguin makes an unthinkable choice: fight or lose everything Sometimes, the fiercest ...

Shutterstock Image It appears that the fierce protective mother instinct transcends across species. Furthermore, it isn't ...

In a remarkable display of maternal courage, a rockhopper penguin was caught on camera defending her chicks against a massive ...

Smith described one sea lion who appeared to be "star-gazing." "Some animals seem very, very sleepy, maybe right after having a seizure," Smith said. "They may be abnormally aggressive." ...

Instead of giving in to the sea lion and accepting her fate, a death that would doom her chicks as well, the penguin takes a bold approach. Never miss a story — sign up for PEOPLE's free daily ...