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.

Cornered Mother Penguin Confronts Hungry Sea Lion '70 Times Her Size' in First of Its Kind Footage (Exclusive) The clip of the rockhopper mom facing off with a giant sea lion comes from National ...

ST. LOUIS — A new penguin has joined the St. Louis Zoo. Hatched on Nov. 30, the new southern rockhopper penguin joins its sibling, Opal, who was born at the zoo in December 2020.

The rockhopper penguin takes its first swim. (Credit: Shedd Aquarium/Sam Cejtin) The newest arrival has grown to 1.5 feet tall and weighs a little over 4 pounds.

Shedd Aquarium has named its two newest rockhopper penguins, Pico and Douglas, nods to their South American roots and the Falkland Islands’ penguin population, respectively.

The newest member of Shedd Aquarium's penguin population, a southern rockhopper chick who hatched on June 16, is weighed during a daily wellness exam, Thursday, July 13, 2023, in Chicago.

The unnamed female southern rockhopper penguin hatched on June 23 with the help of the aquarium's animal care team, who spent hours peeling back the egg's outer shell and membrane when the chick ...

The newest member of Shedd Aquarium's penguin population, a southern rockhopper chick who hatched on June 16, is weighed during a daily wellness exam, Thursday, July 13, 2023, in Chicago.

The unnamed female southern rockhopper penguin hatched on June 23 with the help of the aquarium’s animal care team, who spent hours peeling back the egg’s outer shell and membrane when the ...