Dolphins prove to remain alert for at least 15 days straight and may be capable of more
If you’ve ever worked a 16 hour shift before, you know that the human brain is not designed to stay alert for such long periods of time, especially when it’s expected to do something complex. Dolphin brains, however, don’t appear to have this problem. Some recent research is showing that dolphins sleep with half of their brain turned on, allowing them to both rest their minds and carry on with daily activities in an alert manner. When one side is rested up, they can switch back to the other one. It’s a lot like having a reserve battery, but way cooler.
