Scientists from La Trobe University have proven that crocodiles do indeed sleep with one eye open.
The research has found that crocodiles sleep with half of their brain at a time (known as unihemispheric sleep).
The phenomenon allows crocodiles to keep one eye open which is connected to the ‘awake’ side of their brain, while the other eye and other half of their brain are sleeping. This allows them to immediately respond to threats, prey or other young crocs.
The researchers also found that crocodiles were more inclined to sleep with one eye open when humans were present, and that the open eye was always directed towards the human.
“These findings are really exciting as they are the first of their kind involving crocodilians and may change the way we consider the evolution of sleep,” lead researcher Michael Kelly said.
[img source] Indigo Skies Photography (CCA2.0).
The above story is based on materials provided by La Trobe University.