Chinstrap penguins in Antarctica have a unique sleep pattern involving frequent microsleeps.

These microsleeps last a few seconds each, accumulating to over 11 hours of sleep each day.

The sleep strategy allows the penguins to get deep sleep while also caring for their eggs and chicks.

This challenges traditional understanding of sleep and shows variability of sleep among species and environments.

Further research is needed to understand if this pattern is due to the challenging environment or if there are any associated costs.