The observance originated informally among US researchers at McMurdo Station in Antarctica, who noted that Adélie penguins begin their annual northern migration around April 25 each year.
Introduction
Prepare to celebrate the cutest creatures on the planet with World Penguin Day on April 25! This special day was created in memory of the first successful scientific expedition to Antarctica, which started on this day in 1820. Penguins have been around for millions of years and can live in both fresh and salt water environments. They come in all shapes and sizes, from the largest Emperor penguin to the smallest Little Blue penguin. So get ready for an unforgettable celebration full of fun facts about our beloved waddling friends!



