(OCEANS) The things that keep most of us up at night, may have dolphins sleeping easy. But interestingly enough, our marine mammal friends might not need it. Dolphins have a unique ability to sleep with only half of their brains, keeping the other half alert while they rest. This function allows dolphins to avoid predators, and surface for air, while they remain at rest. Continue reading below in order to find out more about this interesting study. — Global Animal


























