Penguins, true nap experts

Did you know that chinstrap penguins take more than 10,000 micro-naps a day? With 11 hours of sleep a day, these penguins take lightning naps lasting just 4 seconds. Crucial to their survival, it allows them to keep an eye on their eggs while they are incubating. The animal kingdom never ceases to amaze!

Researchers have used non-invasive electrodes and sensors to study these adorable seabirds under natural conditions.

Find out more.