How Dolphins Stay Alert While Resting Dolphins have developed a fascinating adaptation to stay alert while resting, known as unihemispheric slow-wave sleep (USWS). Unlike humans, who sleep with both hemispheres of the brain simultaneously, dolphins can rest one hemisphere of their brain at a time while keeping the other hemisphere awake and alert.
Here’s how it works:
Unihemispheric Slow-Wave Sleep (USWS):
Dolphins'...