Humans began sleeping as a way to partly help reduce DNA damage in nerve cells, scientists at Bar-Ilan University in Israel ...

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

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

The benefits of sleep may be more universal than we thought. We know it helps clear waste from the brain in humans, and now ...

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

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

Yet, jellyfish tend to sleep through the night like humans, and even nap around midday. Meanwhile, their close relative, the ...

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

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

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

This jellyfish is very small in size. Its height and width are about 4.5 millimeters, which is less than the size of a little fingernail.

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