Read 29 facts about these beguiling birds of Antarctica and beyond.

1. Penguins have two days dedicated to them every year: January 20th is Penguin Awareness Day and April 25th is World Penguin Day.

2. A group of penguins in the water is called a ‘raft‘, a group of penguins on land is called a ‘waddle‘. Other collective nouns for penguins include rookery, colony, and huddle.

3. Penguins sneeze to get rid of seawater they ingest while hunting for fish – it’s filtered from their bloodstream by the supraorbital gland behind their eyes.

4. Once a year penguins have a ‘catastrophic moult‘ (yes, that’s the technical term) in which they spend two or three weeks on land while they lose and replace all their feathers.

5. Adélie penguins are named after Adélie Land, in turn, named for the wife of French explorer Jules Dumont d’Urville who discovered these penguins in 1840.