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

Jellyfish and sea anemones are curious creatures: these organisms evolved without a brain and, as scientists discovered only ...

Deep within the sea lies another world entirely. It’s a world of complete darkness, where light is absorbed thousands of feet ...

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

It turns out sleeping isn’t just about resting your eyes, as a new study found that even ancient creatures without eyes — or ...

Like a scene out of a Jules Verne novel, scientists from Schmidt Ocean Institute recently encountered a giant phantom jelly ...

Jellyfish and sea anemones exhibit sleep-like states without brains. Scientists say this discovery rewrites evolution’s timeline, showing sleep may predate complex nervous systems entirely.

Jellyfish and sea anemones display human-like sleep, supporting theories about sleep’s role in preserving neurons, even ...

With increased DNA damage from UV radiation or other reasons, the researchers also observed the jellyfish and sea anemones ...

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

Learn how jellyfish and sea anemones are changing what we know about the evolutionary purpose of sleep.

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