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

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

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

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

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

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

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

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

A new study from Bar-Ilan University shows that one of sleep's core functions originated hundreds of millions of years ago in ...

In jellyfish and sea anemones, neurons accumulate DNA damage while animals are awake and repair that damage during sleep.

Sea monsters are myths. There no real sea monsters in reality, but reality sure does come close. Take the giant phantom ...

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.