In PEOPLE's sneak peek at the three-part show, premiering April 20 on National Geographic, a mother rockhopper penguin faces a giant beast to ensure the safety of her offspring. The clip begins ...

Instead, sometimes it is the smaller or unexpected animals. That was the case when this cornered rockhopper penguin defended itself and its young against a massive sea lion. Watch as this brave ...

Soon after, the African penguin was listed as endangered and the New Zealand-Australia populations of the southern rockhopper penguin were listed as threatened. After another Center petition, in 2014 ...

Saved for the last in the series to appear is the smallest and most agile penguin in the Falkland Islands, the southern rockhopper. Easily recognizable with its straight thin yellow eyebrows with ...

The eastern rockhopper penguin breeds on Prince Edward Island and the Marion Islands in South Africa, the Crozet Islands and Kerguelen Islands in the French Southern Territories, Australia's Heard and ...

The original 50p coins featured the wrong variety of Rockhopper penguin But one of them featured a variety of penguin that was actually native to an island 4,000km away, making them more valuable ...

In a remarkable display of maternal courage, a rockhopper penguin was caught on camera defending her chicks against a massive sea lion near the Falkland Islands. Narrated by Blake Lively ...