Sleep is one of life’s most universal behaviors. Despite its ubiquity, it’s also one of the most mysterious. Humans spend ...

Sleep may have evolved to help reduce DNA damage in nerve cells long before they became centralized in the brain, a study ...

They identified two states: a “normal” one and a quiet state. When they were in this quiet state, the jellyfish were much ...

Jellyfish sleep around eight hours a night, take short daytime naps, and compensate for lost rest,all without having a brain.

A new study analyzed the sleep patterns of jellyfish and sea anemones and found they share some sleep traits with humans. The ...

Despite not having a brain, jellyfish sleep for around eight hours a day, just like humans according to a new study.

The jellyfish, like the sea anemone, although lacking a brain, experience deep rest phases that meet all the criteria of ...

Jellyfish and anemones sleep to repair neuronal DNA damage Jellyfish and sea anemones extend sleep when neuronal DNA is ...

Sea anemones and jellyfish don’t have brains, but the way their neurons behave during sleep shows some surprising ...

Scientists based in Israel studying jellyfish and sea anemones have found evidence of them being in sleep-like states.

Studying ancient sea creatures’ snoozing habits could shed light on the origins of sleep.